push-docker-images.yml

name: Push Docker image to GH packages

on:
  push:
    branches:
      - 'main'

jobs:
  build_docker_images:
    runs-on: ubuntu-20.04
    steps:
      - uses: actions/checkout@v2

      - name: Build image
        run: docker build . --file Dockerfile --tag ${{ github.repository }} --label "runnumber=${GITHUB_RUN_ID}"

      - name: Log into registry
        run: echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io -u ${{ github.actor }} --password-stdin

      - name: Push image
        run: |
          set -x
          IMAGE_ID=ghcr.io/${{ github.repository }}
          VERSION=$(cat version)
          SHA_TAG=sha-${GITHUB_SHA:0:8}

          # Change all uppercase to lowercase
          IMAGE_ID=$(echo $IMAGE_ID | tr '[A-Z]' '[a-z]')
          docker tag ${{ github.repository }} $IMAGE_ID:latest
          docker tag ${{ github.repository }} $IMAGE_ID:$SHA_TAG
          docker tag ${{ github.repository }} $IMAGE_ID:$VERSION
          docker push $IMAGE_ID:latest
          docker push $IMAGE_ID:$SHA_TAG
          docker push $IMAGE_ID:$VERSION
      - name: Checkout
        uses: actions/checkout@v2