release-tag.yml

# Workflow triggered when there is a new Release on GitHub
name: TechDocs container release on DockerHub

on:
  release:
    types: [published]

jobs:
  main:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v3
        
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v2

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2

      - name: Login to DockerHub
        uses: docker/login-action@v2
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }} # This is not the actual password of the user, just a token

      - name: Get the version
        id: get_version
        run: echo ::set-output name=VERSION::${GITHUB_REF#refs/tags/}

      - name: Build and push
        id: docker_build
        uses: docker/build-push-action@v4
        with:
          context: .
          platforms: linux/amd64,linux/arm64
          push: true
          tags: spotify/techdocs:${{ steps.get_version.outputs.VERSION }}

      - name: Image digest
        run: echo ${{ steps.docker_build.outputs.digest }}