Proxy cache expanded support for additional registries

[xaleeks]

Support harbor acting as pull through cache for more registries beyond harbor and Dockerhub. continuation of #11658

[liangminhua]

please support docker registry

[ChristianCiach]

We have a local docker registry that is based on the image library/registry:2 from docker hub. If I lie to Harbor and configure this registry using "Provider: Harbor", the resulting proxy-cache seems to work just fine.

[xaleeks]

@ChristianCiach I'm not sure I understand, what do you mean by 'based on the image from docker hub'. You are configuring a dockerhub endpoint as a harbor type endpoint?

[ChristianCiach]

@xaleeks No, a "dockerhub endpoint" can only download images from docker hub (meaning docker.io). What I am trying to say is that we are using a private registry that is based on this image: https://hub.docker.com/_/registry

To use harbor as a proxy cache for our private registry that is based on this image, I can configure a "harbor endpoint" in harbor, pointing it to our private registry, and it seems to work just fine.

[xaleeks]

That sounds correct then, since Harbor is just running docker distribution on the inside.

[xaleeks]

I'm expecting GCR, Quay.io, ECR, ACR in that order of importance. Let me know if you disagree @steven-zou @stonezdj

[starkoff]

Unfortunately. Not append in "New Registry Endpoint" Docker Hub. Message "Failed to ping endpoint." I can't get ping from hub.docker.com , but docker or docker compose works correctly.

[gw0]

Don't forget GitLab Container Registry, GitHub Container Registry, and already mentioned self-hosted Docker Registry 2.0.

[github-actions]

This issue is being marked stale due to a period of inactivity. If this issue is still relevant, please comment or remove the stale label. Otherwise, this issue will close in 30 days.

[olfway]

up

[hinrichd]

It would be nice to have also support for GitLab Container Registry as proxy cache, too! THX