main.yml

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

name: CI

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

# 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

    # Runs a single command using the runners shell
    - name: Run a one-line script
      run: echo "github.com/${GITHUB_REPOSITORY}"

    - name: Build Docker image
      run: |
        export TAG=${GITHUB_SHA:0:8}
        docker build -t "docker.pkg.github.com/${GITHUB_REPOSITORY}/image:${TAG}" .
    - name: Push Docker image
      run: |
        export TAG=${GITHUB_SHA:0:8}
        echo "$DOCKER_PASSWORD" | docker login docker.pkg.github.com -u "$DOCKER_USERNAME" --password-stdin
        docker push "docker.pkg.github.com/${GITHUB_REPOSITORY}/image:${TAG}"
      if: github.ref == 'refs/heads/main'
      env:
        DOCKER_USERNAME: ${{ secrets.DOCKER_USERNAME }}
        DOCKER_PASSWORD: ${{ secrets.DOCKER_PASSWORD }}