name: Create & Push Container Image
on: push

# Setup environment variables that will be used in the pipeline
env:
  DOCKER_FILE: Dockerfile # The relative path to the dockerfile to be used. Ex: projectname/Dockerfile
  CONTAINER_REGISTRY: ghcr.io # The container registry to upload the created container
  CONTAINER_REGISTRY_USERNAME: ${{ github.actor }} # The user with appropriate rights on registry
  CONTAINER_REGISTRY_PASSWORD: ${{ secrets.CONTAINER_REGISTRY_PASSWORD }} # The password of the user with appropriate rights on registry

jobs:

  create-container:
    name: Build Docker Container
    runs-on: ubuntu-latest
    steps:
      - name: Convert repository name to lowercase
        id: repository_name
        uses: ASzc/change-string-case-action@v2
        with:
          string: ${{ github.repository }}  

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

      - name: Build container image
        run: docker build . --file ${DOCKER_FILE} --tag ${CONTAINER_REGISTRY}/${{ steps.repository_name.outputs.lowercase }}:latest --tag ${CONTAINER_REGISTRY}/${{ steps.repository_name.outputs.lowercase }}:${{ github.run_number }}

      - name: Login to the container registry
        run: echo "${CONTAINER_REGISTRY_PASSWORD}" | docker login ${CONTAINER_REGISTRY} -u ${CONTAINER_REGISTRY_USERNAME} --password-stdin    

      - name: Push container image to container registry
        run: docker push --all-tags ${CONTAINER_REGISTRY}/${{ steps.repository_name.outputs.lowercase }}