licensed_image_build.yml

# This YAML file is used to build and push a custom Docker image with the necessary tools and dependencies for an ML project
# It contains a job that builds the Docker image and pushes it to GitHub Container Registry

name: Licensed Docker Image - Build and Push 

on:
  # Trigger the workflow when a workflow run is completed
  workflow_run:
    workflows: ["Base Docker Image - Build and Push"]
    types:
      - completed
  # Trigger the workflow manually
  workflow_dispatch:

jobs:
  build_and_push:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        # Check out the repository containing the Dockerfile and other necessary files
        uses: actions/checkout@v2

      - name: Log in to GitHub Container Registry
        # Log in to GitHub Container Registry using the actor and a GitHub token
        uses: docker/login-action@v1
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Format repo slug
        # Format the repository slug to lowercase for use in the Docker image tags
        id: repo_slug
        run: echo "REPO_SLUG=$(echo ${{ github.repository }} | tr '[:upper:]' '[:lower:]')" >> $GITHUB_ENV
 
      - name: Pull Base Docker image
        # Pull the base Docker image from GitHub Container Registry
        run: docker pull ghcr.io/${{ env.REPO_SLUG }}/arm-mlops-docker-base:latest
        
      - name: Create license file (stub)
        # Create a license file for the Docker image using the ARM UBL license identifier
        run: |
          docker run -d --name build_container -u root -v ${{ github.workspace }}:/workspace ghcr.io/${{ env.REPO_SLUG }}/arm-mlops-docker-base:latest sleep infinity
          docker exec build_container /home/arm_mlops_docker/ArmCompilerforEmbedded6.20/bin/armlm activate --code ${{ secrets.ARM_UBL_LICENSE_IDENTIFIER }} --as-user arm_mlops_docker --to-file /workspace/arm_mlops_docker_license
          cp ./arm_mlops_docker_license ./docker_licensed/arm_mlops_docker_license
          cat ./docker_licensed/arm_mlops_docker_license

      - name: Build and push Docker image
        # Build the Docker image using the Dockerfile in the `docker_licensed` directory and push it to GitHub Container Registry
        uses: docker/build-push-action@v2
        with:
          context: ./docker_licensed
          push: true
          tags: ghcr.io/${{ env.REPO_SLUG }}/arm-mlops-docker-licensed:latest