Commit c725d998 authored by João Pereira's avatar João Pereira Committed by Nick Gaskill

Add warning to docs about third-party registries and cleanup policies

parent 582a0e42
......@@ -512,6 +512,17 @@ On GitLab.com, the execution time for the cleanup policy is limited, and some of
the Container Registry after the policy runs. The next time the policy runs, the remaining tags are included,
so it may take multiple runs for all tags to be deleted.
WARNING:
GitLab self-managed installs support for third-party container registries that comply with the
[Docker Registry HTTP API V2](https://docs.docker.com/registry/spec/api/)
specification. However, this specification does not include a tag delete operation. Therefore, when
interacting with third-party container registries, GitLab uses a workaround to delete tags. See the
[related issue](https://gitlab.com/gitlab-org/gitlab/-/issues/15737)
for more information. Due to possible implementation variations, this workaround is not guaranteed
to work with all third-party registries in the same predictable way. If you use the GitLab Container
Registry, this workaround is not required because we implemented a special tag delete operation. In
this case, you can expect cleanup policies to be consistent and predictable.
### Create a cleanup policy
You can create a cleanup policy in [the API](#use-the-cleanup-policy-api) or the UI.
......
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