skillscan-lint: Docker Hub release workflow for .github/workflows/

skillscan-lint-release-docker.yml

name: Release Docker

on:
  push:
    tags:
      - "v*"

permissions:
  contents: read

jobs:
  docker:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Validate tag matches project version
        run: |
          PROJECT_VERSION=$(python3 - <<'PY'
          import tomllib
          from pathlib import Path
          data = tomllib.loads(Path('pyproject.toml').read_text())
          print(data['project']['version'])
          PY
          )
          TAG_VERSION="${GITHUB_REF_NAME#v}"
          if [ "$PROJECT_VERSION" != "$TAG_VERSION" ]; then
            echo "Tag/version mismatch: tag=$TAG_VERSION pyproject=$PROJECT_VERSION"
            exit 1
          fi

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Log in to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Extract Docker metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ secrets.DOCKERHUB_USERNAME }}/skillscan-lint
          tags: |
            type=ref,event=tag
            type=raw,value=latest

      - name: Build and push multi-arch image
        uses: docker/build-push-action@v6
        with:
          context: .
          push: true
          platforms: linux/amd64,linux/arm64
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          cache-from: type=gha
          cache-to: type=gha,mode=max

      - name: Update Docker Hub description
        uses: peter-evans/dockerhub-description@v4
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}
          repository: ${{ secrets.DOCKERHUB_USERNAME }}/skillscan-lint
          readme-filepath: ./DOCKER_HUB_DESCRIPTION.md