Delete container images from the Container Registry (FREE ALL)

You can delete container images from your Container Registry.

WARNING: Deleting container images is a destructive action and can't be undone. To restore a deleted container image, you must rebuild and re-upload it.

Garbage collection

Deleting a container image on self-managed instances doesn't free up storage space, it only marks the image as eligible for deletion. To actually delete unreferenced container images and recover storage space, administrators must run garbage collection.

On GitLab.com, the latest version of the Container Registry includes an automatic online garbage collector. For more information, see this blog post. In this new version of the Container Registry, the following are automatically scheduled for deletion in 24 hours if left unreferenced:

• Layers that aren't referenced by any image manifest.
• Image manifests that have no tags and aren't referenced by another manifest (like multi-architecture images).

The online garbage collector is an instance-wide feature, and applies to all namespaces.

Use the GitLab UI

To delete container images using the GitLab UI:

1. On the left sidebar, at the top, select Search GitLab ({search}) to find your project or group.

2. For:

   • A group, select Operate > Container Registry.
   • A project, select Deploy > Container Registry.

3. From the Container Registry page, you can select what you want to delete, by either:

   • Deleting the entire repository, and all the tags it contains, by selecting the red {remove} Trash icon.
   • Navigating to the repository, and deleting tags individually or in bulk by selecting the red {remove} Trash icon next to the tag you want to delete.

4. On the dialog, select Remove tag.

Use the GitLab API

You can use the API to automate the process of deleting container images. For more information, see the following endpoints:

• Delete a Registry repository
• Delete an individual Registry repository tag
• Delete Registry repository tags in bulk

Use GitLab CI/CD

NOTE: GitLab CI/CD doesn't provide a built-in way to remove your container images. This example uses a third-party tool called reg that talks to the GitLab Registry API. For assistance with this third-party tool, see the issue queue for reg.

The following example defines two stages: build, and clean. The build_image job builds a container image for the branch, and the delete_image job deletes it. The reg executable is downloaded and used to remove the container image matching the $CI_PROJECT_PATH:$CI_COMMIT_REF_SLUG predefined CI/CD variable.

To use this example, change the IMAGE_TAG variable to match your needs.

stages:
  - build
  - clean

build_image:
  image: docker:20.10.16
  stage: build
  services:
    - docker:20.10.16-dind
  variables:
    IMAGE_TAG: $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG
  script:
    - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
    - docker build -t $IMAGE_TAG .
    - docker push $IMAGE_TAG
  only:
    - branches
  except:
    - main

delete_image:
  before_script:
    - curl --fail --show-error --location "https://github.com/genuinetools/reg/releases/download/v$REG_VERSION/reg-linux-amd64" --output ./reg
    - echo "$REG_SHA256  ./reg" | sha256sum -c -
    - chmod a+x ./reg
  image: curlimages/curl:7.86.0
  script:
    - ./reg rm -d --auth-url $CI_REGISTRY -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $IMAGE_TAG
  stage: clean
  variables:
    IMAGE_TAG: $CI_PROJECT_PATH:$CI_COMMIT_REF_SLUG
    REG_SHA256: ade837fc5224acd8c34732bf54a94f579b47851cc6a7fd5899a98386b782e228
    REG_VERSION: 0.16.1
  only:
    - branches
  except:
    - main

NOTE: You can download the latest reg release from the releases page, then update the code example by changing the REG_SHA256 and REG_VERSION variables defined in the delete_image job.

Use a cleanup policy

You can create a per-project cleanup policy to ensure older tags and images are regularly removed from the Container Registry.