publish.yml

name: Publish Docker image
on:
  push:
    branches:
      - master
    tags:
      - 'v*.*.*'

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  push_to_registry:
    name: Push Docker image to GitHub Packages
    runs-on: ubuntu-latest
    permissions:
      packages: write
      contents: read
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3
        with:
          platforms: all
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2
        with:
          config: .github/buildkitd.toml
      - name: Login to DockerHub
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: Retrieve author data
        run: |
          echo AUTHOR=$(curl -sSL ${{ github.event.repository.owner.url }} | jq -r '.name') >> $GITHUB_ENV
      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@v4
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          labels: |
            org.opencontainers.image.authors=${{ env.AUTHOR }}
      - name: Build container image
        uses: docker/build-push-action@v4
        with:
          context: .
          platforms: linux/amd64,linux/arm64/v8,linux/arm/v7,linux/ppc64le,linux/s390x
          push: true
          cache-from: type=gha
          cache-to: type=gha,mode=max
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          build-args: |
            VERSION=${{ github.head_ref || github.ref_name }}
            COMMIT=${{ github.sha }}