In case someone from Gitlab is watching: there is a long-standing issue that Gitlab Dependency Proxy does not work with containerd rewriting (https://gitlab.com/gitlab-org/gitlab/-/issues/350485), making it impossible to use as a generic Docker Hub mirror.
Yes, but in this case it's not the problem. It's more about not accepting `?ns=docker.io` as a query parameter on an endpoint, so a rather small and isolated technical issue.
