[firloop]

I wasn't able to get this working, but I was able to use Google's mirror[0] just fine.

Just had to change

    FROM {image_name}

to

    FROM mirror.gcr.io/{image_name} 

Hope this helps!

[0]: https://cloud.google.com/artifact-registry/docs/pull-cached-...

[ic4l]

We tried this initially

  FROM mirror.gcr.io/{image_name}

We received

  failed to resolve source metadata for mirror.gcr.io/

So it looks like these services may not be true mirrors, and just functioning as a library proxy with a cache.

If you're image is not cached on one of these then you may be SOL.

[da768]

During the last Docker Hub outage we found Google mirrors lost all image tags after a while. Image digest references would probably work