telegram_greeting_bot/.github/workflows/main.yml

# .github/workflows/main.yml

name: CI Pipeline

# --- Triggers ---
# This workflow runs on pushes to the 'main' branch and on pull requests targeting 'main'.
on:
  push:
    branches:
      - main
  pull_request:
    branches:
      - main

# --- Jobs ---
# We define a single job called 'build-and-test'.
jobs:
  build-and-test:
    # The type of virtual machine to run the job on. 'ubuntu-latest' is a standard choice.
    runs-on: ubuntu-latest

    # --- Steps ---
    # A sequence of tasks that will be executed as part of the job.
    steps:
      # Step 1: Check out the repository code
      # This action checks out your repository under $GITHUB_WORKSPACE, so your job can access it.
      - name: Checkout repository
        uses: actions/checkout@v4

      # Step 2: Set up Docker Buildx
      # This is a required step for building multi-platform images and using advanced Docker features.
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      # Step 3: Run the test suite
      # This is the core of our CI. It executes the same script we used locally.
      # We provide a dummy BOT_TOKEN because the tests don't need a real one.
      - name: Run integration tests
        run: ./run_tests.sh
        env:
          # We need to provide the BOT_TOKEN variable, as the script expects it,
          # but it can be a dummy value since it's only used for the bot service
          # which is idle during tests.
          BOT_TOKEN: "dummy_token_for_ci"

      # Step 4 (Optional but recommended): Clean up Docker resources
      # This ensures that any lingering containers or images are removed to free up space on the GitHub runner.
      - name: Docker cleanup
        if: always() # This step runs even if previous steps fail.
        run: |
          docker compose down -v --remove-orphans
          docker system prune -af --volumes