[{"data":1,"prerenderedAt":789},["ShallowReactive",2],{"/en-us/blog/tutorial-securing-your-gitlab-pages-with-tls-and-letsencrypt":3,"navigation-en-us":33,"banner-en-us":433,"footer-en-us":443,"blog-post-authors-en-us-Guest author André Miranda":685,"blog-related-posts-en-us-tutorial-securing-your-gitlab-pages-with-tls-and-letsencrypt":700,"assessment-promotions-en-us":740,"next-steps-en-us":779},{"id":4,"title":5,"authorSlugs":6,"body":8,"categorySlug":9,"config":10,"content":14,"description":8,"extension":22,"isFeatured":12,"meta":23,"navigation":24,"path":25,"publishedDate":20,"seo":26,"stem":30,"tagSlugs":31,"__hash__":32},"blogPosts/en-us/blog/tutorial-securing-your-gitlab-pages-with-tls-and-letsencrypt.yml","Tutorial Securing Your Gitlab Pages With Tls And Letsencrypt",[7],"guest-author-andr-miranda",null,"engineering",{"slug":11,"featured":12,"template":13},"tutorial-securing-your-gitlab-pages-with-tls-and-letsencrypt",false,"BlogPost",{"title":15,"description":16,"authors":17,"heroImage":19,"date":20,"body":21,"category":9},"Tutorial: Securing your GitLab Pages with TLS and Let's Encrypt","In this post we will talk about HTTPS and how to add it to your GitLab Pages site with Let's Encrypt",[18],"Guest author André Miranda","https://res.cloudinary.com/about-gitlab-com/image/upload/v1749672214/Blog/Hero%20Images/altssh.jpg","2016-04-11","In this post we will talk about HTTPS and how to add it to your GitLab Pages site\nwith [Let's Encrypt][letsencrypt].\n\n\u003C!-- more -->\n\n## Why TLS/SSL?\n\nWhen discussing HTTPS, it's common to hear people saying that a static\nwebsite doesn't need HTTPS, since it doesn't receive any POST requests, or isn't\nhandling credit card transactions or any other secure request.\nBut that's not the whole story.\n\nTLS ([formerly SSL][TLSwiki]) is a security protocol that can be added to HTTP\nto increase the security of your website by:\n\n1. properly authenticating yourself: the client can trust that you are really\n**you**. The TLS handshake that is made at the beginning of the connection\nensures the client that no one is trying to impersonate you;\n2. data integrity: this ensures that no one has tampered with the data in a\nrequest/response cycle;\n3. encryption: this is the main selling point of TLS, but the\nother two are just as important. This protects the privacy of the communication\nbetween client and server.\n\nThe TLS layer can be added to other protocols too, such as FTP (making it\n[FTPS](https://en.wikipedia.org/wiki/FTPS)) or WebSockets\n(making `ws://` [`wss://`](https://devcenter.heroku.com/articles/websocket-security#wss)).\n\n## HTTPS Everywhere\n\nNowadays, there is a strong push for using TLS on every website.\nThe ultimate goal is to make the web safer, by adding those three components\ncited above to every website.\n\nThe first big player was the [HTTPS Everywhere](https://www.eff.org/https-everywhere)\nbrowser extension. Google has also been using HTTPS compliance to better\nrank websites since [2014](https://webmasters.googleblog.com/2014/08/https-as-ranking-signal.html).\n\n## How to get TLS certificates\n\nIn order to add TLS to HTTP, one would need to get a certificate, and until 2015,\none would need to either pay for it or figure out how to do it with one of the\navailable [Certificate Authorities][certificateauthority].\n\nEnter [Let's Encrypt][letsencrypt], a free, automated, and open Certificate Authority.\nSince [December 2015][publicbeta] anyone can get a free certificate from this\nnew Certificate Authority from the comfort of their terminal.\n\n\n## Implementation\n\nSo, let's suppose we're going to create a static blog with [Jekyll 3][Jekyll].\nIf you are not creating a blog or are not using Jekyll just follow along, it\nshould be straightforward enough to translate the steps for different purposes.\nYou can also find many example projects using different static site generators\n(like Middleman or Hugo) in [GitLab's example projects][examplepages].\n\nA simple example blog can be created with:\n\n```shell\n$ jekyll new cool-blog\nNew jekyll site installed in ~/cool-blog.\n$ cd cool-blog/\n```\n\nNow you have to create a GitLab project. Here we are going to create a \"user\npage\", which means that it is a project created within a user account (not a\ngroup account), and that the name of the project looks like `YOURUSERNAME.gitlab.io`.\nRefer to the [\"Getting started\" section of the GitLab Pages manual][pagesdocs]\nfor more information on that.\n\nFrom now on, remember to replace `YOURDOMAIN.org` with your custom domain and\n`YOURUSERNAME` with, well, your username. ;)\n\n[Create a project] named `YOURUSERNAME.gitlab.io` so that GitLab will\nidentify the project correctly. After that, upload your code to GitLab:\n\n```shell\n$ git remote add origin git@gitlab.com:YOURUSERNAME/YOURUSERNAME.gitlab.io.git\n$ git push -u origin master\n```\n\nOK, so far we have a project uploaded to GitLab, but we haven't configured GitLab Pages yet.\nTo configure it, just create a `.gitlab-ci.yml` file in the root directory of your repository\nwith the following contents:\n\n```yaml\npages:\n  stage: deploy\n  image: ruby:2.3\n  script:\n    - gem install jekyll\n    - jekyll build -d public/\n  artifacts:\n    paths:\n      - public\n  only:\n    - master\n\n```\n\nThis file instructs GitLab Runner to `deploy` by installing Jekyll and\nbuilding your website under the `public/` folder\n(`jekyll build -d public/`).\n\nWhile you Wait for the build process to complete, you can track the progress in the\nBuilds page of your project. Once it starts, it probably won't take longer\nthan a few minutes. Once the build is finished, your website will be available at\n`https://YOURUSERNAME.gitlab.io`. Note that GitLab already provides TLS\ncertificates to all subdomains of `gitlab.io` (but it has some limitations, so\nplease [refer to the documentation for more][limitation]). So if you don't want to add a\ncustom domain, you're done.\n\n## How to configure the TLS certificate of your custom domain.\n\nOnce you buy a domain name and point that domain to your GitLab Pages website,\nyou need to configure 2 things:\n\n1. add the domain to GitLab Pages configuration ([see documentation][customdomain]);\n2. add your custom certificate to your website.\n\nOnce you add your domain, your website will be available under both\n`http://YOURDOMAIN.org` and `https://YOURUSERNAME.gitlab.io`.\n\nBut if you try to access your custom domain with `HTTPS`\n(`https://YOURDOMAIN.org` in this case), your browser will show that\nhorrible page, saying that things are going wrong and someone is trying to\nsteal your information. *Why is that?*\n\nSince GitLab offers TLS certificates to all `gitlab.io` pages\nand your custom domain is just a `CNAME` over that same domain, GitLab serves\nthe `gitlab.io` certificate, and your browser receives mixed messages: on one\nside, the browser is trying to access `YOURDOMAIN.org`, but on the other side\nit is getting a TLS certificate for `*.gitlab.io`,\nsignaling that something is wrong.\n\nIn order to fix it, you need to obtain a certificate for `YOURDOMAIN.org` and\nadd it to GitLab Pages. For that we are going to use\n[Let's Encrypt](https://letsencrypt.org/).\n\nLet's Encrypt is a new certificate authority that offers both *free* and\n*automated* certificates. That's perfect for us: we don't have to pay for\nhaving HTTPS and you can do everything within the comfort of your terminal.\n\nWe begin with downloading the `letsencrypt-auto` utility.\nOpen a new terminal window and type:\n\n```shell\n$ git clone https://github.com/letsencrypt/letsencrypt\n$ cd letsencrypt\n```\n\n`letsencrypt-auto` offers a lot of functionality. For example, if you have\na web server running Apache, you could add `letsencrypt-auto --apache` inside your\nwebserver and have everything done for you. `letsencrypt` targets primarily Unix-like\nwebservers, so the `letsencrypt-auto` tool won't work for Windows users. Check [this\ntutorial][letsencryptwindows] to see how to get Let's Encrypt certificates while running\nWindows.\n\nSince we are running on GitLab's servers instead, we have to do a bit of manual\nwork:\n\n```shell\n$ ./letsencrypt-auto certonly -a manual -d YOURDOMAIN.org\n#\n# If you want to support another domain, www.YOURDOMAIN.org, for example, you\n# can add it to the domain list after -d like:\n# ./letsencrypt-auto certonly -a manual -d YOURDOMAIN.org www.YOURDOMAIN.org\n#\n```\n\nAfter you accept that your IP will be publicly logged, a message like the\nfollowing will appear:\n\n```shell\nMake sure your web server displays the following content at\nhttp://YOURDOMAIN.org/.well-known/acme-challenge/5TBu788fW0tQ5EOwZMdu1Gv3e9C33gxjV58hVtWTbDM\nbefore continuing:\n\n5TBu788fW0tQ5EOwZMdu1Gv3e9C33gxjV58hVtWTbDM.ewlbSYgvIxVOqiP1lD2zeDKWBGEZMRfO_4kJyLRP_4U\n\n#\n# output omitted\n#\n\nPress ENTER to continue\n```\n\nNow it is waiting for the server to be correctly configured so it can go on.\nLeave this terminal window open for now.\n\nSo, the goal is to the make our already-published static website return\nsaid token when said URL is requested. That's easy: create a custom\npage! Just create a file in your blog folder that looks like this:\n\n```markdown\n---\nlayout: null\npermalink: /.well-known/acme-challenge/5TBu788fW0tQ5EOwZMdu1Gv3e9C33gxjV58hVtWTbDM.html\n---\n\n5TBu788fW0tQ5EOwZMdu1Gv3e9C33gxjV58hVtWTbDM.ewlbSYgvIxVOqiP1lD2zeDKWBGEZMRfO_4kJyLRP_4U\n```\n\nThis tells Jekyll to create a static page, which you can see at\n`cool-blog/_site/.well-known/acme-challenge/5TBu788fW0tQ5EOwZMdu1Gv3e9C33gxjV58hVtWTbDM.html`,\nwith no extra HTML, just the token in plain text. As we are using the `permalink` attribute in the\nfront matter, you can name this file anyway you want and put it anywhere, too.\n Note that the behaviour of the `permalink` attribute has\n[changed][jekyllversion] from Jekyll 2 to Jekyll 3, so make sure you have Jekyll 3.x installed.\nIf you're not using version 3 of Jekyll or if you're using a different tool,\njust create the same file in the exact path, like\n`cool-blog/.well-known/acme-challenge/5TBu788fW0tQ5EOwZMdu1Gv3e9C33gxjV58hVtWTbDM.html`\nor an equivalent path in your static site generator of choice.\nHere we'll call it `letsencrypt-setup.html` and place it in the root folder\nof the blog. In order to check that everything is working as expected, start a local server with `jekyll serve` in a separate terminal window and try to access the URL:\n\n```shell\n$ curl http://localhost:4000/.well-known/acme-challenge/5TBu788fW0tQ5EOwZMdu1Gv3e9C33gxjV58hVtWTbDM\n# response:\n5TBu788fW0tQ5EOwZMdu1Gv3e9C33gxjV58hVtWTbDM.ewlbSYgvIxVOqiP1lD2zeDKWBGEZMRfO_4kJyLRP_4U\n```\n\nNote that I just replaced the `http://YOURDOMAIN.org` (from the\n`letsencrypt-auto` instructions) with `http://localhost:4000`.\nEverything is working fine, so we just need to upload the new file to GitLab:\n\n```shell\n$ git add letsencrypt-setup.html\n$ git commit -m \"add letsencypt-setup.html file\"\n$ git push\n```\n\nOnce the build finishes, test again if everything is working well:\n\n```shell\n# Note that we're using the actual domain, not localhost anymore\n$ curl http://YOURDOMAIN.org/.well-known/acme-challenge/5TBu788fW0tQ5EOwZMdu1Gv3e9C33gxjV58hVtWTbDM\n```\n\nIf you get a `404 page not found`, check if you missed any step, or get in touch\nin the comments below.\n\nNow that everything is working as expected, go back to the terminal window\nthat's waiting for you and hit `ENTER`. This instructs the Let's Encrypt's\nservers to go to the URL we just created. If they get the response they were waiting for,\nwe've proven that we actually own the domain and now they'll send you the\nTLS certificates. After a while it responds:\n\n```text\nIMPORTANT NOTES:\n - Congratulations! Your certificate and chain have been saved at\n   /etc/letsencrypt/live/YOURDOMAIN.org/fullchain.pem. Your cert will\n   expire on 2016-07-04. To obtain a new version of the certificate in\n   the future, simply run Let's Encrypt again.\n - If you like Let's Encrypt, please consider supporting our work by:\n\n   Donating to ISRG / Let's Encrypt:   https://letsencrypt.org/donate\n   Donating to EFF:                    https://eff.org/donate-le\n\n```\n\nSuccess! We have correctly acquired a free TLS certificate for our domain!\n\nNote, however, that like any other TLS certificate, it has an expiration date,\nand in the case of certificates issued by Let's Encrypt, the certificate will\nremain valid for 90 days. When you finish setting up, just put in your calendar to\nremember to renew the certificate in time, otherwise it will become invalid,\nand the browser will reject it.\n\nNow we just need to upload the certificate and the key to GitLab.\nGo to **Settings** -> **Pages** inside your project, remove the old `CNAME` and\nadd a new one with the same domain, but now you'll also upload the TLS\ncertificate. Paste the contents of `/etc/letsencrypt/live/YOURDOMAIN.org/fullchain.pem`\n(you'll need `sudo` to read the file) to the \"Certificate (PEM)\"\n field and `/etc/letsencrypt/live/YOURDOMAIN.org/privkey.pem` (also needs `sudo`) to the\n\"Key (PEM)\" field.\n\n![Uploading the certificate to GitLab Pages](https://about.gitlab.com/images/blogimages/gitlab-pages-cert-upload-screenshot.png)\n\nAnd you're done! You now have a fully working HTTPS website:\n\n```shell\n$ curl -vX HEAD https://YOURDOMAIN.org/\n#\n# starting connection\n#\n* TLS 1.2 connection using TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA\n* Server certificate: YOURDOMAIN.org\n* Server certificate: Lets Encrypt Authority X3\n* Server certificate: DST Root CA X3\n```\n\n## How to redirect all traffic to the HTTPS version\n\nEverything is working fine, but now we have an extra concern: we have two\nworking versions of our website, both HTTP **and** HTTPS. We need a way to\nredirect all of our traffic to the HTTPS version, and tell search engines to\ndo the same.\n\n### How to tell search engines which is the correct version\n\nInstructing the search engines is really easy: just tell them that the HTTPS\nversion is the \"canonical\" version, and they send all the users to it.\nAnd how do you do that? By adding a `link` tag to the header of the HTML:\n\n```html\n\u003Clink rel=\"canonical\" href=\"https://YOURDOMAIN.org/specific/page\" />\n```\n\nAdding this to every header on a blog tells the search engine that the correct\nversion is the HTTPS one, and they'll comply.\n\n### Internal links\n\nRemember to use HTTPS for your CSS or JavaScript file URLs, because when the\nbrowser accesses a secure website that relies on an insecure resource, it may\nblock that resource.\n\nIt is [considered a good practice][relativeprotocol] to use the protocol-agnostic path:\n\n```xml\n\u003Clink rel=\"stylesheet\" href=\"//YOURDOMAIN.org/styles.css\" />\n\u003Cscript src=\"//YOURDOMAIN.org/script.js\">\u003C/script>\n```\n\n### When to use JavaScript-based redirect\n\nThere is, however, a case where the user specifically types in the URL\n**without** using HTTPS, and they'll access the HTTP version of your website.\n\nThe correct way of handling that would be to respond with a 301 \"Moved\npermanently\" HTTP code, and the browser would remember it for the next request.\nHowever, that's not a possibility we have here, since we're running on GitLab's servers.\n\nA small hack you can do is to redirect your users with a bit of JavaScript code:\n\n```javascript\nvar host = \"YOURDOMAIN.org\";\nif ((host == window.location.host) && (window.location.protocol != 'https:')) {\n  window.location = window.location.toString().replace(/^http:/, \"https:\");\n}\n```\n\nThis redirects the user to the HTTPS version, but there are a few problems with it:\n\n1. a user could have JavaScript disabled, and would not be affected by that;\n2. an attacker could simply remove that code and behave as a [Man in the Middle][middleattack];\n3. the browser won't remember the redirect instruction, so every time the user types\nthat same URL, the website will have to redirect him/her again.\n\n## Wrap up\n\n![a working certificate screenshot](https://about.gitlab.com/images/blogimages/working-certificate-screenshot.png)\n\nThat's how easy it is to have a free HTTPS-enabled website.\nWith these tools, I see no reason not to do it.\n\nIf you want to improve GitLab's support for Let's Encrypt, you can\ndiscuss and contribute in issues [#474][issue474], [#467][issue467] and\n[#472][issue472] from GitLab EE. They are open to merge requests!\n\nThere's an [excellent talk][talk] by [Pierre Far][pierretwitter] and\n[Ilya Grigorik][ilyatwitter] on HTTPS where you can learn more\nabout it.\n\nIf you want to check the status of your HTTPS enabled website,\n[SSL Labs offers a free online service][ssltest] that\n\"performs a deep analysis of the configuration of any SSL web server on the\npublic Internet\".\n\nThis article is based on [Paul Wakeford's post][wakeford].\n\nI hope it helps you :)\n\n[Create a project]: https://docs.gitlab.com/ee/user/project/working_with_projects.html#create-a-project\n[Jekyll]: https://jekyllrb.com/\n[examplepages]: https://gitlab.com/groups/pages\n[pagesdocs]: http://doc.gitlab.com/ee/pages/README.html#getting-started-with-gitlab-pages\n[TLSwiki]: https://en.wikipedia.org/wiki/Transport_Layer_Security#TLS_1.0\n[letsencrypt]: https://letsencrypt.org/\n[wakeford]: https://www.paulwakeford.info/2015/11/24/letsencrypt/\n[publicbeta]: https://letsencrypt.org/2015/12/03/entering-public-beta.html\n[ssltest]: https://www.ssllabs.com/ssltest/\n[middleattack]: https://en.wikipedia.org/wiki/Man-in-the-middle_attack\n[talk]: https://www.youtube.com/watch?v=cBhZ6S0PFCY\n[relativeprotocol]: http://www.paulirish.com/2010/the-protocol-relative-url/\n[jekyllversion]: https://jekyllrb.com/docs/upgrading/2-to-3/#permalinks-no-longer-automatically-add-a-trailing-slash\n[letsencryptwindows]: https://cultiv.nl/blog/lets-encrypt-on-windows/\n[customdomain]: http://doc.gitlab.com/ee/pages/README.html#add-a-custom-domain-to-your-pages-website\n[certificateauthority]: https://en.wikipedia.org/wiki/Certificate_authority\n[limitation]: http://doc.gitlab.com/ee/pages/README.html#limitations\n[issue474]: https://gitlab.com/gitlab-org/gitlab-ee/issues/474\n[issue472]: https://gitlab.com/gitlab-org/gitlab-ee/issues/472\n[issue467]: https://gitlab.com/gitlab-org/gitlab-ee/issues/467\n[pierretwitter]: https://twitter.com/pierrefar\n[ilyatwitter]: https://twitter.com/igrigorik\n","yml",{},true,"/en-us/blog/tutorial-securing-your-gitlab-pages-with-tls-and-letsencrypt",{"title":15,"description":16,"ogTitle":15,"ogDescription":16,"noIndex":12,"ogImage":19,"ogUrl":27,"ogSiteName":28,"ogType":29,"canonicalUrls":27},"https://about.gitlab.com/blog/tutorial-securing-your-gitlab-pages-with-tls-and-letsencrypt","https://about.gitlab.com","article","en-us/blog/tutorial-securing-your-gitlab-pages-with-tls-and-letsencrypt",[],"I3VXFqkJjNZhuC9myJ6nXW-vGrCCLrM_sDlczDPDTmU",{"data":34},{"logo":35,"freeTrial":40,"sales":45,"login":50,"items":55,"search":363,"minimal":394,"duo":413,"pricingDeployment":423},{"config":36},{"href":37,"dataGaName":38,"dataGaLocation":39},"/","gitlab logo","header",{"text":41,"config":42},"Get free trial",{"href":43,"dataGaName":44,"dataGaLocation":39},"https://gitlab.com/-/trial_registrations/new?glm_source=about.gitlab.com&glm_content=default-saas-trial/","free trial",{"text":46,"config":47},"Talk to sales",{"href":48,"dataGaName":49,"dataGaLocation":39},"/sales/","sales",{"text":51,"config":52},"Sign in",{"href":53,"dataGaName":54,"dataGaLocation":39},"https://gitlab.com/users/sign_in/","sign in",[56,83,178,183,284,344],{"text":57,"config":58,"cards":60},"Platform",{"dataNavLevelOne":59},"platform",[61,67,75],{"title":57,"description":62,"link":63},"The intelligent orchestration platform for DevSecOps",{"text":64,"config":65},"Explore our Platform",{"href":66,"dataGaName":59,"dataGaLocation":39},"/platform/",{"title":68,"description":69,"link":70},"GitLab Duo Agent Platform","Agentic AI for the entire software lifecycle",{"text":71,"config":72},"Meet GitLab Duo",{"href":73,"dataGaName":74,"dataGaLocation":39},"/gitlab-duo-agent-platform/","gitlab duo agent platform",{"title":76,"description":77,"link":78},"Why GitLab","See the top reasons enterprises choose GitLab",{"text":79,"config":80},"Learn more",{"href":81,"dataGaName":82,"dataGaLocation":39},"/why-gitlab/","why gitlab",{"text":84,"left":24,"config":85,"link":87,"lists":91,"footer":160},"Product",{"dataNavLevelOne":86},"solutions",{"text":88,"config":89},"View all Solutions",{"href":90,"dataGaName":86,"dataGaLocation":39},"/solutions/",[92,116,139],{"title":93,"description":94,"link":95,"items":100},"Automation","CI/CD and automation to accelerate deployment",{"config":96},{"icon":97,"href":98,"dataGaName":99,"dataGaLocation":39},"AutomatedCodeAlt","/solutions/delivery-automation/","automated software delivery",[101,105,108,112],{"text":102,"config":103},"CI/CD",{"href":104,"dataGaLocation":39,"dataGaName":102},"/solutions/continuous-integration/",{"text":68,"config":106},{"href":73,"dataGaLocation":39,"dataGaName":107},"gitlab duo agent platform - product menu",{"text":109,"config":110},"Source Code Management",{"href":111,"dataGaLocation":39,"dataGaName":109},"/solutions/source-code-management/",{"text":113,"config":114},"Automated Software Delivery",{"href":98,"dataGaLocation":39,"dataGaName":115},"Automated software delivery",{"title":117,"description":118,"link":119,"items":124},"Security","Deliver code faster without compromising security",{"config":120},{"href":121,"dataGaName":122,"dataGaLocation":39,"icon":123},"/solutions/application-security-testing/","security and compliance","ShieldCheckLight",[125,129,134],{"text":126,"config":127},"Application Security Testing",{"href":121,"dataGaName":128,"dataGaLocation":39},"Application security testing",{"text":130,"config":131},"Software Supply Chain Security",{"href":132,"dataGaLocation":39,"dataGaName":133},"/solutions/supply-chain/","Software supply chain security",{"text":135,"config":136},"Software Compliance",{"href":137,"dataGaName":138,"dataGaLocation":39},"/solutions/software-compliance/","software compliance",{"title":140,"link":141,"items":146},"Measurement",{"config":142},{"icon":143,"href":144,"dataGaName":145,"dataGaLocation":39},"DigitalTransformation","/solutions/visibility-measurement/","visibility and measurement",[147,151,155],{"text":148,"config":149},"Visibility & Measurement",{"href":144,"dataGaLocation":39,"dataGaName":150},"Visibility and Measurement",{"text":152,"config":153},"Value Stream Management",{"href":154,"dataGaLocation":39,"dataGaName":152},"/solutions/value-stream-management/",{"text":156,"config":157},"Analytics & Insights",{"href":158,"dataGaLocation":39,"dataGaName":159},"/solutions/analytics-and-insights/","Analytics and insights",{"title":161,"items":162},"GitLab for",[163,168,173],{"text":164,"config":165},"Enterprise",{"href":166,"dataGaLocation":39,"dataGaName":167},"/enterprise/","enterprise",{"text":169,"config":170},"Small Business",{"href":171,"dataGaLocation":39,"dataGaName":172},"/small-business/","small business",{"text":174,"config":175},"Public Sector",{"href":176,"dataGaLocation":39,"dataGaName":177},"/solutions/public-sector/","public sector",{"text":179,"config":180},"Pricing",{"href":181,"dataGaName":182,"dataGaLocation":39,"dataNavLevelOne":182},"/pricing/","pricing",{"text":184,"config":185,"link":187,"lists":191,"feature":271},"Resources",{"dataNavLevelOne":186},"resources",{"text":188,"config":189},"View all resources",{"href":190,"dataGaName":186,"dataGaLocation":39},"/resources/",[192,225,243],{"title":193,"items":194},"Getting started",[195,200,205,210,215,220],{"text":196,"config":197},"Install",{"href":198,"dataGaName":199,"dataGaLocation":39},"/install/","install",{"text":201,"config":202},"Quick start guides",{"href":203,"dataGaName":204,"dataGaLocation":39},"/get-started/","quick setup checklists",{"text":206,"config":207},"Learn",{"href":208,"dataGaLocation":39,"dataGaName":209},"https://university.gitlab.com/","learn",{"text":211,"config":212},"Product documentation",{"href":213,"dataGaName":214,"dataGaLocation":39},"https://docs.gitlab.com/","product documentation",{"text":216,"config":217},"Best practice videos",{"href":218,"dataGaName":219,"dataGaLocation":39},"/getting-started-videos/","best practice videos",{"text":221,"config":222},"Integrations",{"href":223,"dataGaName":224,"dataGaLocation":39},"/integrations/","integrations",{"title":226,"items":227},"Discover",[228,233,238],{"text":229,"config":230},"Customer success stories",{"href":231,"dataGaName":232,"dataGaLocation":39},"/customers/","customer success stories",{"text":234,"config":235},"Blog",{"href":236,"dataGaName":237,"dataGaLocation":39},"/blog/","blog",{"text":239,"config":240},"Remote",{"href":241,"dataGaName":242,"dataGaLocation":39},"https://handbook.gitlab.com/handbook/company/culture/all-remote/","remote",{"title":244,"items":245},"Connect",[246,251,256,261,266],{"text":247,"config":248},"GitLab Services",{"href":249,"dataGaName":250,"dataGaLocation":39},"/services/","services",{"text":252,"config":253},"Community",{"href":254,"dataGaName":255,"dataGaLocation":39},"/community/","community",{"text":257,"config":258},"Forum",{"href":259,"dataGaName":260,"dataGaLocation":39},"https://forum.gitlab.com/","forum",{"text":262,"config":263},"Events",{"href":264,"dataGaName":265,"dataGaLocation":39},"/events/","events",{"text":267,"config":268},"Partners",{"href":269,"dataGaName":270,"dataGaLocation":39},"/partners/","partners",{"backgroundColor":272,"textColor":273,"text":274,"image":275,"link":279},"#2f2a6b","#fff","Insights for the future of software development",{"altText":276,"config":277},"the source promo card",{"src":278},"https://res.cloudinary.com/about-gitlab-com/image/upload/v1758208064/dzl0dbift9xdizyelkk4.svg",{"text":280,"config":281},"Read the latest",{"href":282,"dataGaName":283,"dataGaLocation":39},"/the-source/","the source",{"text":285,"config":286,"lists":288},"Company",{"dataNavLevelOne":287},"company",[289],{"items":290},[291,296,302,304,309,314,319,324,329,334,339],{"text":292,"config":293},"About",{"href":294,"dataGaName":295,"dataGaLocation":39},"/company/","about",{"text":297,"config":298,"footerGa":301},"Jobs",{"href":299,"dataGaName":300,"dataGaLocation":39},"/jobs/","jobs",{"dataGaName":300},{"text":262,"config":303},{"href":264,"dataGaName":265,"dataGaLocation":39},{"text":305,"config":306},"Leadership",{"href":307,"dataGaName":308,"dataGaLocation":39},"/company/team/e-group/","leadership",{"text":310,"config":311},"Team",{"href":312,"dataGaName":313,"dataGaLocation":39},"/company/team/","team",{"text":315,"config":316},"Handbook",{"href":317,"dataGaName":318,"dataGaLocation":39},"https://handbook.gitlab.com/","handbook",{"text":320,"config":321},"Investor relations",{"href":322,"dataGaName":323,"dataGaLocation":39},"https://ir.gitlab.com/","investor relations",{"text":325,"config":326},"Trust Center",{"href":327,"dataGaName":328,"dataGaLocation":39},"/security/","trust center",{"text":330,"config":331},"AI Transparency Center",{"href":332,"dataGaName":333,"dataGaLocation":39},"/ai-transparency-center/","ai transparency center",{"text":335,"config":336},"Newsletter",{"href":337,"dataGaName":338,"dataGaLocation":39},"/company/contact/#contact-forms","newsletter",{"text":340,"config":341},"Press",{"href":342,"dataGaName":343,"dataGaLocation":39},"/press/","press",{"text":345,"config":346,"lists":347},"Contact us",{"dataNavLevelOne":287},[348],{"items":349},[350,353,358],{"text":46,"config":351},{"href":48,"dataGaName":352,"dataGaLocation":39},"talk to sales",{"text":354,"config":355},"Support portal",{"href":356,"dataGaName":357,"dataGaLocation":39},"https://support.gitlab.com","support portal",{"text":359,"config":360},"Customer portal",{"href":361,"dataGaName":362,"dataGaLocation":39},"https://customers.gitlab.com/customers/sign_in/","customer portal",{"close":364,"login":365,"suggestions":372},"Close",{"text":366,"link":367},"To search repositories and projects, login to",{"text":368,"config":369},"gitlab.com",{"href":53,"dataGaName":370,"dataGaLocation":371},"search login","search",{"text":373,"default":374},"Suggestions",[375,377,381,383,387,391],{"text":68,"config":376},{"href":73,"dataGaName":68,"dataGaLocation":371},{"text":378,"config":379},"Code Suggestions (AI)",{"href":380,"dataGaName":378,"dataGaLocation":371},"/solutions/code-suggestions/",{"text":102,"config":382},{"href":104,"dataGaName":102,"dataGaLocation":371},{"text":384,"config":385},"GitLab on AWS",{"href":386,"dataGaName":384,"dataGaLocation":371},"/partners/technology-partners/aws/",{"text":388,"config":389},"GitLab on Google Cloud",{"href":390,"dataGaName":388,"dataGaLocation":371},"/partners/technology-partners/google-cloud-platform/",{"text":392,"config":393},"Why GitLab?",{"href":81,"dataGaName":392,"dataGaLocation":371},{"freeTrial":395,"mobileIcon":400,"desktopIcon":405,"secondaryButton":408},{"text":396,"config":397},"Start free trial",{"href":398,"dataGaName":44,"dataGaLocation":399},"https://gitlab.com/-/trials/new/","nav",{"altText":401,"config":402},"Gitlab Icon",{"src":403,"dataGaName":404,"dataGaLocation":399},"https://res.cloudinary.com/about-gitlab-com/image/upload/v1758203874/jypbw1jx72aexsoohd7x.svg","gitlab icon",{"altText":401,"config":406},{"src":407,"dataGaName":404,"dataGaLocation":399},"https://res.cloudinary.com/about-gitlab-com/image/upload/v1758203875/gs4c8p8opsgvflgkswz9.svg",{"text":409,"config":410},"Get Started",{"href":411,"dataGaName":412,"dataGaLocation":399},"https://gitlab.com/-/trial_registrations/new?glm_source=about.gitlab.com/get-started/","get started",{"freeTrial":414,"mobileIcon":419,"desktopIcon":421},{"text":415,"config":416},"Learn more about GitLab Duo",{"href":417,"dataGaName":418,"dataGaLocation":399},"/gitlab-duo/","gitlab duo",{"altText":401,"config":420},{"src":403,"dataGaName":404,"dataGaLocation":399},{"altText":401,"config":422},{"src":407,"dataGaName":404,"dataGaLocation":399},{"freeTrial":424,"mobileIcon":429,"desktopIcon":431},{"text":425,"config":426},"Back to pricing",{"href":181,"dataGaName":427,"dataGaLocation":399,"icon":428},"back to pricing","GoBack",{"altText":401,"config":430},{"src":403,"dataGaName":404,"dataGaLocation":399},{"altText":401,"config":432},{"src":407,"dataGaName":404,"dataGaLocation":399},{"title":434,"button":435,"config":440},"See how agentic AI transforms software delivery",{"text":436,"config":437},"Watch GitLab Transcend now",{"href":438,"dataGaName":439,"dataGaLocation":39},"/events/transcend/virtual/","transcend event",{"layout":441,"icon":442},"release","AiStar",{"data":444},{"text":445,"source":446,"edit":452,"contribute":457,"config":462,"items":467,"minimal":674},"Git is a trademark of Software Freedom Conservancy and our use of 'GitLab' is under license",{"text":447,"config":448},"View page source",{"href":449,"dataGaName":450,"dataGaLocation":451},"https://gitlab.com/gitlab-com/marketing/digital-experience/about-gitlab-com/","page source","footer",{"text":453,"config":454},"Edit this page",{"href":455,"dataGaName":456,"dataGaLocation":451},"https://gitlab.com/gitlab-com/marketing/digital-experience/about-gitlab-com/-/blob/main/content/","web ide",{"text":458,"config":459},"Please contribute",{"href":460,"dataGaName":461,"dataGaLocation":451},"https://gitlab.com/gitlab-com/marketing/digital-experience/about-gitlab-com/-/blob/main/CONTRIBUTING.md/","please contribute",{"twitter":463,"facebook":464,"youtube":465,"linkedin":466},"https://twitter.com/gitlab","https://www.facebook.com/gitlab","https://www.youtube.com/channel/UCnMGQ8QHMAnVIsI3xJrihhg","https://www.linkedin.com/company/gitlab-com",[468,515,569,613,640],{"title":179,"links":469,"subMenu":484},[470,474,479],{"text":471,"config":472},"View plans",{"href":181,"dataGaName":473,"dataGaLocation":451},"view plans",{"text":475,"config":476},"Why Premium?",{"href":477,"dataGaName":478,"dataGaLocation":451},"/pricing/premium/","why premium",{"text":480,"config":481},"Why Ultimate?",{"href":482,"dataGaName":483,"dataGaLocation":451},"/pricing/ultimate/","why ultimate",[485],{"title":486,"links":487},"Contact Us",[488,491,493,495,500,505,510],{"text":489,"config":490},"Contact sales",{"href":48,"dataGaName":49,"dataGaLocation":451},{"text":354,"config":492},{"href":356,"dataGaName":357,"dataGaLocation":451},{"text":359,"config":494},{"href":361,"dataGaName":362,"dataGaLocation":451},{"text":496,"config":497},"Status",{"href":498,"dataGaName":499,"dataGaLocation":451},"https://status.gitlab.com/","status",{"text":501,"config":502},"Terms of use",{"href":503,"dataGaName":504,"dataGaLocation":451},"/terms/","terms of use",{"text":506,"config":507},"Privacy statement",{"href":508,"dataGaName":509,"dataGaLocation":451},"/privacy/","privacy statement",{"text":511,"config":512},"Cookie preferences",{"dataGaName":513,"dataGaLocation":451,"id":514,"isOneTrustButton":24},"cookie preferences","ot-sdk-btn",{"title":84,"links":516,"subMenu":525},[517,521],{"text":518,"config":519},"DevSecOps platform",{"href":66,"dataGaName":520,"dataGaLocation":451},"devsecops platform",{"text":522,"config":523},"AI-Assisted Development",{"href":417,"dataGaName":524,"dataGaLocation":451},"ai-assisted development",[526],{"title":527,"links":528},"Topics",[529,534,539,544,549,554,559,564],{"text":530,"config":531},"CICD",{"href":532,"dataGaName":533,"dataGaLocation":451},"/topics/ci-cd/","cicd",{"text":535,"config":536},"GitOps",{"href":537,"dataGaName":538,"dataGaLocation":451},"/topics/gitops/","gitops",{"text":540,"config":541},"DevOps",{"href":542,"dataGaName":543,"dataGaLocation":451},"/topics/devops/","devops",{"text":545,"config":546},"Version Control",{"href":547,"dataGaName":548,"dataGaLocation":451},"/topics/version-control/","version control",{"text":550,"config":551},"DevSecOps",{"href":552,"dataGaName":553,"dataGaLocation":451},"/topics/devsecops/","devsecops",{"text":555,"config":556},"Cloud Native",{"href":557,"dataGaName":558,"dataGaLocation":451},"/topics/cloud-native/","cloud native",{"text":560,"config":561},"AI for Coding",{"href":562,"dataGaName":563,"dataGaLocation":451},"/topics/devops/ai-for-coding/","ai for coding",{"text":565,"config":566},"Agentic AI",{"href":567,"dataGaName":568,"dataGaLocation":451},"/topics/agentic-ai/","agentic ai",{"title":570,"links":571},"Solutions",[572,574,576,581,585,588,592,595,597,600,603,608],{"text":126,"config":573},{"href":121,"dataGaName":126,"dataGaLocation":451},{"text":115,"config":575},{"href":98,"dataGaName":99,"dataGaLocation":451},{"text":577,"config":578},"Agile development",{"href":579,"dataGaName":580,"dataGaLocation":451},"/solutions/agile-delivery/","agile delivery",{"text":582,"config":583},"SCM",{"href":111,"dataGaName":584,"dataGaLocation":451},"source code management",{"text":530,"config":586},{"href":104,"dataGaName":587,"dataGaLocation":451},"continuous integration & delivery",{"text":589,"config":590},"Value stream management",{"href":154,"dataGaName":591,"dataGaLocation":451},"value stream management",{"text":535,"config":593},{"href":594,"dataGaName":538,"dataGaLocation":451},"/solutions/gitops/",{"text":164,"config":596},{"href":166,"dataGaName":167,"dataGaLocation":451},{"text":598,"config":599},"Small business",{"href":171,"dataGaName":172,"dataGaLocation":451},{"text":601,"config":602},"Public sector",{"href":176,"dataGaName":177,"dataGaLocation":451},{"text":604,"config":605},"Education",{"href":606,"dataGaName":607,"dataGaLocation":451},"/solutions/education/","education",{"text":609,"config":610},"Financial services",{"href":611,"dataGaName":612,"dataGaLocation":451},"/solutions/finance/","financial services",{"title":184,"links":614},[615,617,619,621,624,626,628,630,632,634,636,638],{"text":196,"config":616},{"href":198,"dataGaName":199,"dataGaLocation":451},{"text":201,"config":618},{"href":203,"dataGaName":204,"dataGaLocation":451},{"text":206,"config":620},{"href":208,"dataGaName":209,"dataGaLocation":451},{"text":211,"config":622},{"href":213,"dataGaName":623,"dataGaLocation":451},"docs",{"text":234,"config":625},{"href":236,"dataGaName":237,"dataGaLocation":451},{"text":229,"config":627},{"href":231,"dataGaName":232,"dataGaLocation":451},{"text":239,"config":629},{"href":241,"dataGaName":242,"dataGaLocation":451},{"text":247,"config":631},{"href":249,"dataGaName":250,"dataGaLocation":451},{"text":252,"config":633},{"href":254,"dataGaName":255,"dataGaLocation":451},{"text":257,"config":635},{"href":259,"dataGaName":260,"dataGaLocation":451},{"text":262,"config":637},{"href":264,"dataGaName":265,"dataGaLocation":451},{"text":267,"config":639},{"href":269,"dataGaName":270,"dataGaLocation":451},{"title":285,"links":641},[642,644,646,648,650,652,654,658,663,665,667,669],{"text":292,"config":643},{"href":294,"dataGaName":287,"dataGaLocation":451},{"text":297,"config":645},{"href":299,"dataGaName":300,"dataGaLocation":451},{"text":305,"config":647},{"href":307,"dataGaName":308,"dataGaLocation":451},{"text":310,"config":649},{"href":312,"dataGaName":313,"dataGaLocation":451},{"text":315,"config":651},{"href":317,"dataGaName":318,"dataGaLocation":451},{"text":320,"config":653},{"href":322,"dataGaName":323,"dataGaLocation":451},{"text":655,"config":656},"Sustainability",{"href":657,"dataGaName":655,"dataGaLocation":451},"/sustainability/",{"text":659,"config":660},"Diversity, inclusion and belonging (DIB)",{"href":661,"dataGaName":662,"dataGaLocation":451},"/diversity-inclusion-belonging/","Diversity, inclusion and belonging",{"text":325,"config":664},{"href":327,"dataGaName":328,"dataGaLocation":451},{"text":335,"config":666},{"href":337,"dataGaName":338,"dataGaLocation":451},{"text":340,"config":668},{"href":342,"dataGaName":343,"dataGaLocation":451},{"text":670,"config":671},"Modern Slavery Transparency Statement",{"href":672,"dataGaName":673,"dataGaLocation":451},"https://handbook.gitlab.com/handbook/legal/modern-slavery-act-transparency-statement/","modern slavery transparency statement",{"items":675},[676,679,682],{"text":677,"config":678},"Terms",{"href":503,"dataGaName":504,"dataGaLocation":451},{"text":680,"config":681},"Cookies",{"dataGaName":513,"dataGaLocation":451,"id":514,"isOneTrustButton":24},{"text":683,"config":684},"Privacy",{"href":508,"dataGaName":509,"dataGaLocation":451},[686],{"id":687,"title":688,"body":8,"config":689,"content":691,"description":8,"extension":22,"meta":695,"navigation":24,"path":696,"seo":697,"stem":698,"__hash__":699},"blogAuthors/en-us/blog/authors/guest-author-andr-miranda.yml","Guest Author Andr Miranda",{"template":690},"BlogAuthor",{"name":18,"config":692},{"headshot":693,"ctfId":694},"https://res.cloudinary.com/about-gitlab-com/image/upload/v1749659488/Blog/Author%20Headshots/gitlab-logo-extra-whitespace.png","Guest-author-Andr-Miranda",{},"/en-us/blog/authors/guest-author-andr-miranda",{},"en-us/blog/authors/guest-author-andr-miranda","ac2zHo3Yd7Rcc4McAovjjDoyFOUP1di-YhL9MOAJMAk",[701,716,729],{"content":702,"config":714},{"title":703,"description":704,"authors":705,"heroImage":707,"date":708,"body":709,"category":9,"tags":710},"How to use GitLab Container Virtual Registry with Docker Hardened Images","Learn how to simplify container image management with this step-by-step guide.",[706],"Tim Rizzi","https://res.cloudinary.com/about-gitlab-com/image/upload/v1772111172/mwhgbjawn62kymfwrhle.png","2026-03-12","If you're a platform engineer, you've probably had this conversation:\n  \n*\"Security says we need to use hardened base images.\"*\n\n*\"Great, where do I configure credentials for yet another registry?\"*\n\n*\"Also, how do we make sure everyone actually uses them?\"*\n\nOr this one:\n\n*\"Why are our builds so slow?\"*\n\n*\"We're pulling the same 500MB image from Docker Hub in every single job.\"*\n\n*\"Can't we just cache these somewhere?\"*\n\nI've been working on [Container Virtual Registry](https://docs.gitlab.com/user/packages/virtual_registry/container/) at GitLab specifically to solve these problems. It's a pull-through cache that sits in front of your upstream registries — Docker Hub, dhi.io (Docker Hardened Images), MCR, and Quay — and gives your teams a single endpoint to pull from. Images get cached on the first pull. Subsequent pulls come from the cache. Your developers don't need to know or care which upstream a particular image came from.\n\nThis article shows you how to set up Container Virtual Registry, specifically with Docker Hardened Images in mind, since that's a combination that makes a lot of sense for teams concerned about security and not making their developers' lives harder.\n\n## What problem are we actually solving?\n\nThe Platform teams I usually talk to manage container images across three to five registries:\n\n* **Docker Hub** for most base images\n* **dhi.io** for Docker Hardened Images (security-conscious workloads)\n* **MCR** for .NET and Azure tooling\n* **Quay.io** for Red Hat ecosystem stuff\n* **Internal registries** for proprietary images\n\nEach one has its own:\n\n* Authentication mechanism\n* Network latency characteristics\n* Way of organizing image paths\n\nYour CI/CD configs end up littered with registry-specific logic. Credential management becomes a project unto itself. And every pipeline job pulls the same base images over the network, even though they haven't changed in weeks.\n\nContainer Virtual Registry consolidates this. One registry URL. One authentication flow (GitLab's). Cached images are served from GitLab's infrastructure rather than traversing the internet each time.\n\n## How it works\n\nThe model is straightforward:\n\n```text\nYour pipeline pulls:\n  gitlab.com/virtual_registries/container/1000016/python:3.13\n\nVirtual registry checks:\n  1. Do I have this cached? → Return it\n  2. No? → Fetch from upstream, cache it, return it\n\n```\n\nYou configure upstreams in priority order. When a pull request comes in, the virtual registry checks each upstream until it finds the image. The result gets cached for a configurable period (default 24 hours).\n\n```text\n┌─────────────────────────────────────────────────────────┐\n│                    CI/CD Pipeline                       │\n│                          │                              │\n│                          ▼                              │\n│   gitlab.com/virtual_registries/container/\u003Cid>/image   │\n└─────────────────────────────────────────────────────────┘\n                           │\n                           ▼\n┌─────────────────────────────────────────────────────────┐\n│            Container Virtual Registry                   │\n│                                                         │\n│  Upstream 1: Docker Hub ────────────────┐               │\n│  Upstream 2: dhi.io (Hardened) ────────┐│               │\n│  Upstream 3: MCR ─────────────────────┐││               │\n│  Upstream 4: Quay.io ────────────────┐│││               │\n│                                      ││││               │\n│                    ┌─────────────────┴┴┴┴──┐            │\n│                    │        Cache          │            │\n│                    │  (manifests + layers) │            │\n│                    └───────────────────────┘            │\n└─────────────────────────────────────────────────────────┘\n```\n\n## Why this matters for Docker Hardened Images\n\n[Docker Hardened Images](https://docs.docker.com/dhi/) are great because of the minimal attack surface, near-zero CVEs, proper software bills of materials (SBOMs), and SLSA provenance. If you're evaluating base images for security-sensitive workloads, they should be on your list.\n\nBut adopting them creates the same operational friction as any new registry:\n\n* **Credential distribution**: You need to get Docker credentials to every system that pulls images from dhi.io.\n* **CI/CD changes**: Every pipeline needs to be updated to authenticate with dhi.io.\n* **Developer friction**: People need to remember to use the hardened variants.\n* **Visibility gap**: It's difficulat to tell if teams are actually using hardened images vs. regular ones.\n\nVirtual registry addresses each of these:\n\n**Single credential**: Teams authenticate to GitLab. The virtual registry handles upstream authentication. You configure Docker credentials once, at the registry level, and they apply to all pulls.\n\n**No CI/CD changes per-team**: Point pipelines at your virtual registry. Done. The upstream configuration is centralized.\n\n**Gradual adoption**: Since images get cached with their full path, you can see in the cache what's being pulled. If someone's pulling `library/python:3.11` instead of the hardened variant, you'll know.\n\n**Audit trail**: The cache shows you exactly which images are in active use. Useful for compliance, useful for understanding what your fleet actually depends on.\n\n## Setting it up\n\nHere's a real setup using the Python client from this demo project.\n\n### Create the virtual registry\n\n```python\nfrom virtual_registry_client import VirtualRegistryClient\n\nclient = VirtualRegistryClient()\n\nregistry = client.create_virtual_registry(\n    group_id=\"785414\",  # Your top-level group ID\n    name=\"platform-images\",\n    description=\"Cached container images for platform teams\"\n)\n\nprint(f\"Registry ID: {registry['id']}\")\n# You'll need this ID for the pull URL\n```\n\n### Add Docker Hub as an upstream\n\nFor official images like Alpine, Python, etc.:\n\n```python\ndocker_upstream = client.create_upstream(\n    registry_id=registry['id'],\n    url=\"https://registry-1.docker.io\",\n    name=\"Docker Hub\",\n    cache_validity_hours=24\n)\n```\n\n### Add Docker Hardened Images (dhi.io)\n\nDocker Hardened Images are hosted on `dhi.io`, a separate registry that requires authentication:\n\n```python\ndhi_upstream = client.create_upstream(\n    registry_id=registry['id'],\n    url=\"https://dhi.io\",\n    name=\"Docker Hardened Images\",\n    username=\"your-docker-username\",\n    password=\"your-docker-access-token\",\n    cache_validity_hours=24\n)\n```\n\n### Add other upstreams\n\n```python\n# MCR for .NET teams\nclient.create_upstream(\n    registry_id=registry['id'],\n    url=\"https://mcr.microsoft.com\",\n    name=\"Microsoft Container Registry\",\n    cache_validity_hours=48\n)\n\n# Quay for Red Hat stuff\nclient.create_upstream(\n    registry_id=registry['id'],\n    url=\"https://quay.io\",\n    name=\"Quay.io\",\n    cache_validity_hours=24\n)\n```\n\n### Update your CI/CD\n\nHere's a `.gitlab-ci.yml` that pulls through the virtual registry:\n\n```yaml\nvariables:\n  VIRTUAL_REGISTRY_ID: \u003Cyour_virtual_registry_ID>\n\n  \nbuild:\n  image: docker:24\n  services:\n    - docker:24-dind\n  before_script:\n    # Authenticate to GitLab (which handles upstream auth for you)\n    - echo \"${CI_JOB_TOKEN}\" | docker login -u gitlab-ci-token --password-stdin gitlab.com\n  script:\n    # All of these go through your single virtual registry\n    \n    # Official Docker Hub images (use library/ prefix)\n    - docker pull gitlab.com/virtual_registries/container/${VIRTUAL_REGISTRY_ID}/library/alpine:latest\n    \n    # Docker Hardened Images from dhi.io (no prefix needed)\n    - docker pull gitlab.com/virtual_registries/container/${VIRTUAL_REGISTRY_ID}/python:3.13\n    \n    # .NET from MCR\n    - docker pull gitlab.com/virtual_registries/container/${VIRTUAL_REGISTRY_ID}/dotnet/sdk:8.0\n```\n\n### Image path formats\n\nDifferent registries use different path conventions:\n\n| Registry | Pull URL Example |\n|----------|------------------|\n| Docker Hub (official) | `.../library/python:3.11-slim` |\n| Docker Hardened Images (dhi.io) | `.../python:3.13` |\n| MCR | `.../dotnet/sdk:8.0` |\n| Quay.io | `.../prometheus/prometheus:latest` |\n\n### Verify it's working\n\nAfter some pulls, check your cache:\n\n```python\nupstreams = client.list_registry_upstreams(registry['id'])\nfor upstream in upstreams:\n    entries = client.list_cache_entries(upstream['id'])\n    print(f\"{upstream['name']}: {len(entries)} cached entries\")\n\n```\n\n## What the numbers look like\n\nI ran tests pulling images through the virtual registry:\n\n| Metric | Without Cache | With Warm Cache |\n|--------|---------------|-----------------|\n| Pull time (Alpine) | 10.3s | 4.2s |\n| Pull time (Python 3.13 DHI) | 11.6s | ~4s |\n| Network roundtrips to upstream | Every pull | Cache misses only |\n\n\n\n\nThe first pull is the same speed (it has to fetch from upstream). Every pull after that, for the cache validity period, comes straight from GitLab's storage. No network hop to Docker Hub, dhi.io, MCR, or wherever the image lives.\n\nFor a team running hundreds of pipeline jobs per day, that's hours of cumulative build time saved.\n\n## Practical considerations\nHere are some considerations to keep in mind:\n\n### Cache validity\n\n24 hours is the default. For security-sensitive images where you want patches quickly, consider 12 hours or less:\n\n```python\nclient.create_upstream(\n    registry_id=registry['id'],\n    url=\"https://dhi.io\",\n    name=\"Docker Hardened Images\",\n    username=\"your-username\",\n    password=\"your-token\",\n    cache_validity_hours=12\n)\n```\n\nFor stable, infrequently-updated images (like specific version tags), longer validity is fine.\n\n### Upstream priority\n\nUpstreams are checked in order. If you have images with the same name on different registries, the first matching upstream wins.\n\n### Limits\n\n* Maximum of 20 virtual registries per group\n* Maximum of 20 upstreams per virtual registry\n\n## Configuration via UI\n\nYou can also configure virtual registries and upstreams directly from the GitLab UI—no API calls required. Navigate to your group's **Settings > Packages and registries > Virtual Registry** to:\n\n* Create and manage virtual registries\n* Add, edit, and reorder upstream registries\n* View and manage the cache\n* Monitor which images are being pulled\n\n## What's next\n\nWe're actively developing:\n\n* **Allow/deny lists**: Use regex to control which images can be pulled from specific upstreams.\n\nThis is beta software. It works, people are using it in production, but we're still iterating based on feedback.\n\n## Share your feedback\n\nIf you're a platform engineer dealing with container registry sprawl, I'd like to understand your setup:\n\n* How many upstream registries are you managing?\n* What's your biggest pain point with the current state?\n* Would something like this help, and if not, what's missing?\n\nPlease share your experiences in the [Container Virtual Registry feedback issue](https://gitlab.com/gitlab-org/gitlab/-/work_items/589630).\n## Related resources\n- [New GitLab metrics and registry features help reduce CI/CD bottlenecks](https://about.gitlab.com/blog/new-gitlab-metrics-and-registry-features-help-reduce-ci-cd-bottlenecks/#container-virtual-registry)\n- [Container Virtual Registry documentation](https://docs.gitlab.com/user/packages/virtual_registry/container/)\n- [Container Virtual Registry API](https://docs.gitlab.com/api/container_virtual_registries/)",[711,712,713],"tutorial","product","features",{"featured":12,"template":13,"slug":715},"using-gitlab-container-virtual-registry-with-docker-hardened-images",{"content":717,"config":727},{"title":718,"description":719,"authors":720,"heroImage":722,"date":723,"category":9,"tags":724,"body":726},"How IIT Bombay students are coding the future with GitLab","At GitLab, we often talk about how software accelerates innovation. But sometimes, you have to step away from the Zoom calls and stand in a crowded university hall to remember why we do this.",[721],"Nick Veenhof","https://res.cloudinary.com/about-gitlab-com/image/upload/v1750099013/Blog/Hero%20Images/Blog/Hero%20Images/blog-image-template-1800x945%20%2814%29_6VTUA8mUhOZNDaRVNPeKwl_1750099012960.png","2026-01-08",[255,607,725],"open source","The GitLab team recently had the privilege of judging the **iHack Hackathon** at **IIT Bombay's E-Summit**. The energy was electric, the coffee was flowing, and the talent was undeniable. But what struck us most wasn't just the code — it was the sheer determination of students to solve real-world problems, often overcoming significant logistical and financial hurdles to simply be in the room.\n\n\nThrough our [GitLab for Education program](https://about.gitlab.com/solutions/education/), we aim to empower the next generation of developers with tools and opportunity. Here is a look at what the students built, and how they used GitLab to bridge the gap between idea and reality.\n\n## The challenge: Build faster, build securely\n\nThe premise for the GitLab track of the hackathon was simple: Don't just show us a product; show us how you built it. We wanted to see how students utilized GitLab's platform — from Issue Boards to CI/CD pipelines — to accelerate the development lifecycle.\n\nThe results were inspiring.\n\n## The winners\n\n### 1st place: Team Decode — Democratizing Scientific Research\n\n**Project:** FIRE (Fast Integrated Research Environment)\n\nTeam Decode took home the top prize with a solution that warms a developer's heart: a local-first, blazing-fast data processing tool built with [Rust](https://about.gitlab.com/blog/secure-rust-development-with-gitlab/) and Tauri. They identified a massive pain point for data science students: existing tools are fragmented, slow, and expensive.\n\nTheir solution, FIRE, allows researchers to visualize complex formats (like NetCDF) instantly. What impressed the judges most was their \"hacker\" ethos. They didn't just build a tool; they built it to be open and accessible.\n\n**How they used GitLab:** Since the team lived far apart, asynchronous communication was key. They utilized **GitLab Issue Boards** and **Milestones** to track progress and integrated their repo with Telegram to get real-time push notifications. As one team member noted, \"Coordinating all these technologies was really difficult, and what helped us was GitLab... the Issue Board really helped us track who was doing what.\"\n\n![Team Decode](https://res.cloudinary.com/about-gitlab-com/image/upload/v1767380253/epqazj1jc5c7zkgqun9h.jpg)\n\n### 2nd place: Team BichdeHueDost — Reuniting to Solve Payments\n\n**Project:** SemiPay (RFID Cashless Payment for Schools)\n\nThe team name, BichdeHueDost, translates to \"Friends who have been set apart.\" It's a fitting name for a group of friends who went to different colleges but reunited to build this project. They tackled a unique problem: handling cash in schools for young children. Their solution used RFID cards backed by a blockchain ledger to ensure secure, cashless transactions for students.\n\n**How they used GitLab:** They utilized [GitLab CI/CD](https://about.gitlab.com/topics/ci-cd/) to automate the build process for their Flutter application (APK), ensuring that every commit resulted in a testable artifact. This allowed them to iterate quickly despite the \"flaky\" nature of cross-platform mobile development.\n\n![Team BichdeHueDost](https://res.cloudinary.com/about-gitlab-com/image/upload/v1767380253/pkukrjgx2miukb6nrj5g.jpg)\n\n### 3rd place: Team ZenYukti — Agentic Repository Intelligence\n\n**Project:** RepoInsight AI (AI-powered, GitLab-native intelligence platform)\n\nTeam ZenYukti impressed us with a solution that tackles a universal developer pain point: understanding unfamiliar codebases. What stood out to the judges was the tool's practical approach to onboarding and code comprehension: RepoInsight-AI automatically generates documentation, visualizes repository structure, and even helps identify bugs, all while maintaining context about the entire codebase.\n\n**How they used GitLab:** The team built a comprehensive CI/CD pipeline that showcased GitLab's security and DevOps capabilities. They integrated [GitLab's Security Templates](https://gitlab.com/gitlab-org/gitlab/-/tree/master/lib/gitlab/ci/templates/Security) (SAST, Dependency Scanning, and Secret Detection), and utilized [GitLab Container Registry](https://docs.gitlab.com/user/packages/container_registry/) to manage their Docker images for backend and frontend components. They created an AI auto-review bot that runs on merge requests, demonstrating an \"agentic workflow\" where AI assists in the development process itself.\n\n![Team ZenYukti](https://res.cloudinary.com/about-gitlab-com/image/upload/v1767380253/ymlzqoruv5al1secatba.jpg)\n\n## Beyond the code: A lesson in inclusion\n\nWhile the code was impressive, the most powerful moment of the event happened away from the keyboard.\n\nDuring the feedback session, we learned about the journey Team ZenYukti took to get to Mumbai. They traveled over 24 hours, covering nearly 1,800 kilometers. Because flights were too expensive and trains were booked, they traveled in the \"General Coach,\" a non-reserved, severely overcrowded carriage.\n\nAs one student described it:\n\n*\"You cannot even imagine something like this... there are no seats... people sit on the top of the train. This is what we have endured.\"*\n\nThis hit home. [Diversity, Inclusion, and Belonging](https://handbook.gitlab.com/handbook/company/culture/inclusion/) are core values at GitLab. We realized that for these students, the barrier to entry wasn't intellect or skill, it was access.\n\nIn that moment, we decided to break that barrier. We committed to reimbursing the travel expenses for the participants who struggled to get there. It's a small step, but it underlines a massive truth: **talent is distributed equally, but opportunity is not.**\n\n![hackathon class together](https://res.cloudinary.com/about-gitlab-com/image/upload/v1767380252/o5aqmboquz8ehusxvgom.jpg)\n\n### The future is bright (and automated)\n\nWe also saw incredible potential in teams like Prometheus, who attempted to build an autonomous patch remediation tool (DevGuardian), and Team Arrakis, who built a voice-first job portal for blue-collar workers using [GitLab Duo](https://about.gitlab.com/gitlab-duo/) to troubleshoot their pipelines.\n\nTo all the students who participated: You are the future. Through [GitLab for Education](https://about.gitlab.com/solutions/education/), we are committed to providing you with the top-tier tools (like GitLab Ultimate) you need to learn, collaborate, and change the world — whether you are coding from a dorm room, a lab, or a train carriage. **Keep shipping.**\n\n> :bulb: Learn more about the [GitLab for Education program](https://about.gitlab.com/solutions/education/).\n",{"slug":728,"featured":12,"template":13},"how-iit-bombay-students-code-future-with-gitlab",{"content":730,"config":738},{"title":731,"description":732,"authors":733,"heroImage":734,"date":735,"category":9,"tags":736,"body":737},"Artois University elevates research and curriculum with GitLab Ultimate for Education","Artois University's CRIL leveraged the GitLab for Education program to gain free access to Ultimate, transforming advanced research and computer science curricula.",[721],"https://res.cloudinary.com/about-gitlab-com/image/upload/v1750099203/Blog/Hero%20Images/Blog/Hero%20Images/blog-image-template-1800x945%20%2820%29_2bJGC5ZP3WheoqzlLT05C5_1750099203484.png","2025-12-10",[607,255,712],"Leading academic institutions face a critical challenge: how to provide thousands of students and researchers with industry-standard, **full-featured DevSecOps tools** without compromising institutional control. Many start with basic version control, but the modern curriculum demands integrated capabilities for planning, security, and advanced CI/CD.\n\nThe **GitLab for Education program** is designed to solve this by providing access to **GitLab Ultimate** for qualifying institutions, allowing them to scale their operations and elevate their academic offerings. \n\nThis article showcases a powerful success story from the **Centre de Recherche en Informatique de Lens (CRIL)**, a joint laboratory of **Artois University** and CNRS in France. After years of relying solely on GitLab Community Edition (CE), the university's move to GitLab Ultimate through the GitLab for Education program immediately unlocked advanced capabilities, transforming their teaching, research, and contribution workflows virtually overnight. This story demonstrates why GitLab Ultimate is essential for institutions seeking to deliver advanced computer science and research curricula.\n\n## GitLab Ultimate unlocked: Managing scale and driving academic value\n\n**Artois University's** self-managed GitLab instance is a large-scale operation, supporting nearly **3,000 users** across approximately **19,000 projects**, primarily serving computer science students and researchers. While GitLab Community Edition was robust, the upgrade to GitLab Ultimate provided the sophisticated tooling necessary for managing this scale and facilitating advanced university-level work.\n\n***\"We can see the difference,\" says Daniel Le Berre, head of research at CRIL and the instance maintainer. \"It's a completely different product. Each week reveals new features that directly enhance our productivity and teaching.\"***\n\nThe institution joined the GitLab for Education program specifically because it covers both **instructional and non-commercial research use cases** and offers full access to Ultimate's features, removing significant cost barriers.\n\n### Key GitLab Ultimate benefits for students and researchers\n\n* **Advanced project management at scale:** Master's students now benefit from **GitLab Ultimate's project planning features**. This enables them to structure, track, and manage complex, long-term research projects using professional methodologies like portfolio management and advanced issue tracking that seamlessly roll up across their thousands of projects.\n\n* **Enhanced visibility:** Features like improved dashboards and code previews directly in Markdown files dramatically streamline tracking and documentation review, reducing administrative friction for both instructors and students managing large project loads.\n\n## Comprehensive curriculum: From concepts to continuous delivery\n\nGitLab Ultimate is deeply integrated into the computer science curriculum, moving students beyond simple `git` commands to practical **DevSecOps implementation**.\n\n* **Git fundamentals:** Students begin by visualizing concepts using open-source tools to master Git concepts.\n\n* **Full CI/CD implementation:** Students use GitLab CI for rigorous **Test-Driven Development (TDD)** in their software projects. They learn to build, test, and perform quality assurance using unit and integration testing pipelines—core competency made seamless by the integrated platform.\n\n* **DevSecOps for research and documentation:** The university teaches students that DevSecOps principles are vital for all collaborative work. Inspired by earlier work in Delft, students manage and produce critical research documentation (PDFs from Markdown files) using GitLab, incorporating quality checks like linters and spell checks directly in the CI pipeline. This ensures high-quality, reproducible research output.\n\n* **Future-proofing security skills:** The GitLab Ultimate platform immediately positions the institution to incorporate advanced DevSecOps features like SAST and DAST scanning as their research and development code projects grow, ensuring students are prepared for industry security standards.\n\n## Accelerating open source contributions with GitLab Duo\n\nAccess to the full GitLab platform, including our AI capabilities, has empowered students to make impactful contributions to the wider open source community faster than ever before.\n\nTwo Master's students recently completed direct contributions to the GitLab product, adding the **ORCID identifier** into user profiles. Working on GitLab.com, they leveraged **GitLab Duo's AI chat and code suggestions** to navigate the codebase efficiently.\n\n***\"This would not have been possible without GitLab Duo,\" Daniel Le Berre notes. \"The AI features helped students, who might have lacked deep codebase knowledge, deliver meaningful contributions in just two weeks.\"***\n\nThis demonstrates how providing students with cutting-edge tools **accelerates their learning and impact**, allowing them to translate classroom knowledge into real-world contributions immediately.\n\n## Empowering open research and institutional control\n\nThe stability of the self-managed instance at Artois University is key to its success. This model guarantees **institutional control and stability** — a critical factor for long-term research preservation.\n\nThe institution's expertise in this area was recently highlighted in a major 2024 study led by CRIL, titled: \"[Higher Education and Research Forges in France - Definition, uses, limitations encountered and needs analysis](https://hal.science/hal-04208924v4)\" ([Project on GitLab](https://gitlab.in2p3.fr/coso-college-codes-sources-et-logiciels/forges-esr-en)). The research found that the vast majority of public forges in French Higher Education and Research relied on **GitLab**. This finding underscores the consensus among academic leaders that self-hosted solutions are essential for **data control and longevity**, especially when compared to relying on external, commercial forges.\n\n## Unlock GitLab Ultimate for your institution today\n\nThe success story of **Artois University's CRIL** proves the transformative power of the GitLab for Education program. By providing **free access to GitLab Ultimate**, we enable large-scale institutions to:\n\n1.  **Deliver a modern, integrated DevSecOps curriculum.**\n\n2.  **Support advanced, collaborative research projects with Ultimate planning features.**\n\n3.  **Empower students to make AI-assisted open source contributions.**\n\n4.  **Maintain institutional control and data longevity.**\n\nIf your academic institution is ready to equip its students and researchers with the complete DevSecOps platform and its most advanced features, we invite you to join the program.\n\nThe program provides **free access to GitLab Ultimate** for qualifying instructional and non-commercial research use cases.\n\n**Apply now [online](https://about.gitlab.com/solutions/education/join/).**\n",{"slug":739,"featured":24,"template":13},"artois-university-elevates-curriculum-with-gitlab-ultimate-for-education",{"promotions":741},[742,756,767],{"id":743,"categories":744,"header":746,"text":747,"button":748,"image":753},"ai-modernization",[745],"ai-ml","Is AI achieving its promise at scale?","Quiz will take 5 minutes or less",{"text":749,"config":750},"Get your AI maturity score",{"href":751,"dataGaName":752,"dataGaLocation":237},"/assessments/ai-modernization-assessment/","modernization assessment",{"config":754},{"src":755},"https://res.cloudinary.com/about-gitlab-com/image/upload/v1772138786/qix0m7kwnd8x2fh1zq49.png",{"id":757,"categories":758,"header":759,"text":747,"button":760,"image":764},"devops-modernization",[712,553],"Are you just managing tools or shipping innovation?",{"text":761,"config":762},"Get your DevOps maturity score",{"href":763,"dataGaName":752,"dataGaLocation":237},"/assessments/devops-modernization-assessment/",{"config":765},{"src":766},"https://res.cloudinary.com/about-gitlab-com/image/upload/v1772138785/eg818fmakweyuznttgid.png",{"id":768,"categories":769,"header":771,"text":747,"button":772,"image":776},"security-modernization",[770],"security","Are you trading speed for security?",{"text":773,"config":774},"Get your security maturity score",{"href":775,"dataGaName":752,"dataGaLocation":237},"/assessments/security-modernization-assessment/",{"config":777},{"src":778},"https://res.cloudinary.com/about-gitlab-com/image/upload/v1772138786/p4pbqd9nnjejg5ds6mdk.png",{"header":780,"blurb":781,"button":782,"secondaryButton":787},"Start building faster today","See what your team can do with the intelligent orchestration platform for DevSecOps.\n",{"text":783,"config":784},"Get your free trial",{"href":785,"dataGaName":44,"dataGaLocation":786},"https://gitlab.com/-/trial_registrations/new?glm_content=default-saas-trial&glm_source=about.gitlab.com/","feature",{"text":489,"config":788},{"href":48,"dataGaName":49,"dataGaLocation":786},1773350849142]