Add multi-arch Docker build CI/CD workflow (amd64 + arm64)#1169
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antoinetielbeke wants to merge 1 commit into
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Add multi-arch Docker build CI/CD workflow (amd64 + arm64)#1169antoinetielbeke wants to merge 1 commit into
antoinetielbeke wants to merge 1 commit into
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Automates building and publishing the official Docker image (tobiashoessl/antragsgruen) for both amd64 and arm64 on every release. Key features: - Multi-arch builds: linux/amd64 + linux/arm64 via QEMU + Buildx - Automated release workflow triggered on GitHub Releases - Also runs on pushes to main (path-filtered) and PRs (dry-run) - Manual dispatch with optional version override - Pushes to Docker Hub and GitHub Container Registry - Generates distribution tarball matching create-dist.sh behavior - Build caching via GitHub Actions cache for faster rebuilds Required secrets: - DOCKER_HUB_USERNAME: Docker Hub username - DOCKER_HUB_TOKEN: Docker Hub access token
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Summary
Automates building and publishing the official Docker image (
tobiashoessl/antragsgruen) for both amd64 and arm64 architectures on every release.This mirrors the manual command already documented in
docs/create-dist.sh(line 7):Why multi-arch / ARM support?
We (Volt Europa) run Antragsgruen on an ARM-based Kubernetes cluster, and the current single-arch amd64 image is unusable for us.
What it does
main(path-filtered)main-tagged imageworkflow_dispatchThe distribution tarball is generated inline (matching
docs/create-dist.sh), then fed into the Docker build viaAPP_ARCHIVEbuild arg — preserving the exact same deployment artifact your Apache Dockerfile expects.Question for you: Docker Hub only or also GHCR?
I configured it to push to both Docker Hub (
tobiashoessl/antragsgruen) and GitHub Container Registry (ghcr.io/tobiashoessl/antragsgruen). GHCR has the advantage of:GITHUB_TOKENauto-generated (no secret setup needed)But if you prefer to keep it Docker Hub only, I can simplify to one registry. What do you think?
Required secrets
To enable the Docker Hub push, you need to add two repository secrets:
DOCKER_HUB_USERNAMEDOCKER_HUB_TOKENThe GHCR push uses the auto-generated
GITHUB_TOKENand needs no extra setup.Verification
You can test the workflow by running it via
workflow_dispatchfrom the Actions tab before any release. On PRs, it builds without pushing so you can verify the Dockerfile compiles correctly.