Improve Docker build workflow with Buildx and caching - #11
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The push step failed with 'unauthorized: access token has insufficient scopes' because the workflow never logged in — Docker Hub issued an anonymous, pull-only token. - Log in with docker/login-action using DOCKERHUB_USERNAME/DOCKERHUB_TOKEN - Build and push via docker/build-push-action with GitHub Actions layer cache - Skip login and push on pull_request events, where secrets are unavailable and unreviewed images should not be published - Also tag each build with the commit SHA alongside :latest Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01UCVZxJxkKSJwWJKDNoiAs4
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Summary
Refactored the Docker image build and push workflow to use Docker Buildx with improved caching and conditional authentication, enabling better build performance and security.
Key Changes
docker buildanddocker pushcommands with the officialdocker/build-push-action@v6for more robust image buildingdocker/setup-buildx-action@v3for enhanced build capabilitiestype=gha) for both cache source and destination to speed up subsequent buildslatestand commit SHA-based tags for better version trackingImplementation Details
pushparameter is conditionally set based on the event type (github.event_name != 'pull_request')mode=maxto maximize cache reuse across buildshttps://claude.ai/code/session_01UCVZxJxkKSJwWJKDNoiAs4