name: Docker image publishing description: multi-arch image publishing to GHCR via GitHub Actions
Skill: Docker image publishing
Goal
Provide a reusable GitHub Actions workflow to build/push multi-arch images to GHCR on tag pushes.
Conventions
- Publish on tags
v*. - Use native Intel or ARM runners for CI/CD. Don't use QEMU.
- Use buildx + per-arch digest builds, then merge into a manifest.
- Use
docker/metadata-actionfor semver tag derivation. - Prioritize minimal images, taking advantage of caching and layers.
- Prefer reproducible builds (minimize network fetches at runtime; pin versions when practical).
Files
.github/workflows/docker-publish.yml