docker.yml

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

name: Build and Publish Docker image on Docker registry

# Controls when the workflow will run
on:
  # Triggers the workflow on push or pull request events but only for the master branch
  push:
    paths-ignore: 
      - '*.md'
      - LICENSE
      - 'example.flaskenv'
      - '.gitattributes'
      - '.github/workflows/docker.yml'
      - '.dockerignore'
      
    branches: [ master ]
  pull_request:
    branches: [ master ]

  # 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:
      - name: Checkout code
        uses: actions/checkout@v2

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

      - name: Login to DockerHub
        uses: docker/login-action@v1
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}
      - name: Build image and push to Docker Hub
        uses: docker/build-push-action@v2
        with:
          context: ./
          tags: jvt038/metatube:latest
          push: ${{ github.ref == 'refs/heads/master' }}
      - name: Image digest
        run: echo ${{ steps.docker_build.outputs.digest }}