synapse-admin/.github/workflows/test-docker-image.yml

name: Test docker image creation

on:
  push:
    # Sequence of patterns matched against refs/heads
    # prettier-ignore
    branches:
      # Push events on branch fix_docker_cd
      - fix_docker_cd
    # Sequence of patterns matched against refs/tags
    tags:
      - '[0-9]+\.[0-9]+\.[0-9]+'             # Push events to 0.X.X tag

jobs:
  docker:
    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: ${{ secrets.DOCKERHUB_TOKEN }}
      - name: Calculate docker image tag
        id: set-tag
        run: |
          case "${GITHUB_REF}" in
              refs/heads/master|refs/heads/main)
                  tag=latest
                  ;;
              refs/tags/*)
                  tag=${GITHUB_REF#refs/tags/}
                  ;;
              *)
                  tag=${GITHUB_SHA}
                  ;;
          esac
          echo "::set-output name=tag::$tag"          
      - name: Build and Push Tag
        uses: docker/build-push-action@v3
        with:
          context: .
          push: false
          tags: "awesometechnologies/synapse-admin:${{ steps.set-tag.outputs.tag }}"
          platforms: linux/amd64,linux/arm64