Buildkit Caching

Hello :slight_smile:

I try to reuse an existing docker image as buildkit cache source.

On several local machines running a DOCKER_BUILDKIT=1 docker build . --cache-from ... works fine and the build is done in about 50seconds. On github the cache get’s not hit and the complete image is rebuild (takes ~ 5 minutes)

If I use buildx by including the action and push the image to the local docker images using --load the load itself takes about 2 minutes.

Has anyone an idea why the “normal” docker build does not hit the cache - the buildx equivalent does?