"This legacy service is shutting down, effective April 15, 2025."

[marckohlbrugge]

I'm using this Github Action workflow:
https://gist.github.com/marckohlbrugge/0168ec5c450e9db0839518faa4956f3e

Which started failing today due to GitHub sunsetting their old GitHub Actions caching systems:
https://gh.io/gha-cache-sunset

I'm not sure what part of my workflow is relying on that old GHA system. But it seems to be docker/setup-buildx-action@v3

Any idea how to fix this?

   DEBUG [1c704bab] 	#22 exporting to GitHub Actions Cache
   DEBUG [1c704bab] 	#22 preparing build cache for export
   DEBUG [1c704bab] 	#22 preparing build cache for export 0.6s done
   DEBUG [1c704bab] 	#22 ERROR: This legacy service is shutting down, effective April 15, 2025. Migrate to the new service ASAP. For more information: https://gh.io/gha-cache-sunset
   DEBUG [1c704bab] 	------
   DEBUG [1c704bab] 	 > importing cache manifest from gha:474203116873454141:
   DEBUG [1c704bab] 	------
   DEBUG [1c704bab] 	------
   DEBUG [1c704bab] 	 > exporting to GitHub Actions Cache:
   DEBUG [1c704bab] 	------
   DEBUG [1c704bab] 	
   DEBUG [1c704bab] 	 1 warning found (use docker --debug to expand):
   DEBUG [1c704bab] 	 - InvalidDefaultArgInFrom: Default value for ARG registry.docker.com/library/ruby:$RUBY_VERSION-slim results in empty or invalid base image name (line 5)
   DEBUG [1c704bab] 	ERROR: failed to solve: This legacy service is shutting down, effective April 15, 2025. Migrate to the new service ASAP. For more information: https://gh.io/gha-cache-sunset

[crazy-max]

I'm using this Github Action workflow:
https://gist.github.com/marckohlbrugge/0168ec5c450e9db0839518faa4956f3e

Looks like you're using a self-hosted runner, maybe Buildx is not up to date (>= 0.21.0 required for new cache service v2), see docker/build-push-action#1345 (comment). But hard to guess without workflow logs.

Edit our docs has been updated with a note about sunset of GHA cache service v1: https://docs.docker.com/build/ci/github-actions/cache/#github-cache

[marckohlbrugge]

I am indeed using a hosted runner ( https://www.blacksmith.sh ). I've gone ahead and specified the version now:

      - name: Set up Docker Buildx
         id: buildx
         uses: docker/setup-buildx-action@v3
         with:
           version: latest

This seems to have fixed it 👍