build.yml

name: Create and publish a docker image to ghcr
on:
  release:
    types:
      - created

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

jobs:
  build-and-push-image:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write    

    steps:
      - uses: actions/checkout@v3
        with:
            fetch-depth: 0
      - name: GHCR login
        uses: docker/login-action@v2
        with:
          registry: '${{ env.REGISTRY }}'
          username: '${{ github.actor }}'
          password: '${{ secrets.GITHUB_TOKEN }}'
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v2
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2
      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@v4
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}        
      - name: Build and push
        uses: docker/build-push-action@v2
        with:
          context: .
          platforms: linux/amd64,linux/arm64
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}