publish.yml

name: Publish Docker image to ghcr.io
on:
  release:
    tags:
      - 'v*'
  workflow_dispatch:

jobs:
  push_to_registry:
    name: Push Docker image to Github Container registry
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
    steps:
      - name: Check out the repo
        uses: actions/checkout@v2

      - name: Log in to the Github Container registry
        uses: docker/login-action@v1
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@v3
        with:
          images: ghcr.io/${{ github.repository }}

      - name: Build and push
        uses: docker/build-push-action@v2
        with:
          context: .
          file: ./Dockerfile
          push: true
          tags: |
            ghcr.io/${{ github.repository }}:${{ github.ref_name }}
            ghcr.io/${{ github.repository }}:latest
          labels: |
            org.opencontainers.image.source=${{ github.event.repository.clone_url }}
            org.opencontainers.image.created=$(date -u +'%Y-%m-%dT%H:%M:%SZ')
            org.opencontainers.image.revision=${{ github.sha }}