publish.yml

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

jobs:
  publish:
    runs-on: ubuntu-latest
    steps:
      - name: Check out the repo
        uses: actions/checkout@v2

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v1

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v1

      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v3
        with:
          images: ghcr.io/${{ github.repository }}
          # generate Docker tags based on the following events/attributes
          tags: |
            type=raw,value=latest,enable=${{ github.ref == format('refs/heads/{0}', 'master') }}
            type=ref,event=branch
            type=match,pattern=(v\d+\.\d+)
            type=sha

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

      - name: Build container image
        uses: docker/build-push-action@v2
        with:
          push: true
          platforms: linux/amd64,linux/arm64, linux/arm
          file: Dockerfile
          tags:  ${{ steps.meta.outputs.tags  }}