release.yml

name: Release
on: 
  release:
    types: [published]

jobs:
  release:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2

      - name: Login to DockerHub
        uses: docker/login-action@v1 
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKER_PASSWORD }}

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

      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v3
        with:
          # list of Docker images to use as base name for tags
          images: |
            ${{ github.repository }}
            ghcr.io/${{ github.repository }}/${{ github.event.repository.name }}
          # generate Docker tags based on the following events/attributes
          tags: |
            type=semver,pattern=v{{version}}
            type=semver,pattern=v{{major}}.{{minor}}
            type=semver,pattern=v{{major}}
          # always generate latest tag on push
          flavor: |
            latest=true

      - name: Build and push to DockerHub & GitHub Packages
        id: docker_build
        uses: docker/build-push-action@v2
        with:
          push: true
          tags: ${{ steps.meta.outputs.tags }}