The documentation at https://help.github.com/en/actions/building-actions/metadata-syntax-for-github-actions#example-using-public-docker-container-on-github indicates that one can use public docker containers packaged on github by specifying one as the image of a github action.

Other posts here on github.community suggest that this feature is planned but not yet implemented. If so, the doc should be fixed accordingly.

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Following that documentation results in an error during the initial setup phase of a workflow indicating that the specified value for ‘image:’ is incorrect.

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If instead you try ‘image: docker://docker.pkg.github.com/$GITHUB_REPOSITORY/name:tag’, the setup phase will succeed, but the docker pull will fail due to an authentication error on github package’s docker server side.

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