publish_docker_image.yml

name: Build and publish Docker image to Registry

on:
  release:
    types: [created]

env:
  REGISTRY: ghcr.io

jobs:
  build-and-push-image:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write

    steps:

    - name: Checkout repository
      uses: actions/checkout@v3

    - name: Log in to registry
      run: echo "${{ secrets.GITHUB_TOKEN }}" | docker login $REGISTRY -u ${{ github.actor }} --password-stdin

    - name: Build images and publish them
      run: IMAGE_ID="$REGISTRY/$GITHUB_REPOSITORY"; docker build -t "$IMAGE_ID:$GITHUB_REF" .; docker tag "$IMAGE_ID:$GITHUB_REF" "$IMAGE_ID:latest" ; docker push $IMAGE_ID;