push_docker_image.yml

name: Create and publish a Docker image

on:
  push:
    branches: ['main']
    tags:
      - 'v*.*.*'
env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}
jobs:
  build-and-push-image:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        platform:
          - linux/amd64
          - linux/arm64
    permissions:
      contents: read
      packages: write
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
      - name: Log in to the Container registry
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=ref,event=branch
            type=ref,event=pr
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            # set latest tag for master branch
            type=raw,value=latest,enable=${{ github.ref == format('refs/heads/{0}', 'develop') }}
            type=raw,value=latest,enable=${{ github.ref == format('refs/heads/{0}', 'master') }}
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
      - name: Build and push Docker image
        uses: docker/build-push-action@v5
        with:
          # Indicates that the Docker build context is the current directory.
          # Otherwise, it would be a Git URL (doing a separate clean checkout).
          context: .
          push: true
          platforms: linux/amd64,linux/arm64
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}