qp-demo/.github/workflows/build.yml

# This is a basic workflow to help you get started with Actions

name: Build

# Controls when the action will run. 
on:
  # Triggers the workflow on push or pull request events but only for the master branch
  pull_request:
    branches: 
    - master
    - release_*

  # Allows you to run this workflow manually from the Actions tab
  workflow_dispatch:

# A workflow run is made up of one or more jobs that can run sequentially or in parallel
jobs:
  # This workflow contains a single job called "build"
  Build:
    # The type of runner that the job will run on
    runs-on: ubuntu-latest

    # Steps represent a sequence of tasks that will be executed as part of the job
    steps:
      # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
      - uses: actions/checkout@v2

      - name: Set up Docker Buildx
        id: buildx
        uses: docker/setup-buildx-action@v1
          
      - name: Build and push
        id: docker_build
        uses: docker/build-push-action@v2
        with:
          context: ./
          file: ./Dockerfile
          push: false
          tags: ${{ secrets.DOCKER_HUB_USERNAME }}/qp_demo:${GITHUB_REF#refs/heads/}.${GITHUB_SHA::8}

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