edonosotti/ci-cd-tutorial-sample-app

# Taken from: https://docs.github.com/en/free-pro-team@latest/actions/guides/building-and-testing-python
# and: https://docs.github.com/en/free-pro-team@latest/actions/guides/publishing-docker-images
# and adapted. More info on workflow syntax: https://docs.github.com/en/free-pro-team@latest/actions/reference/workflow-syntax-for-github-actions
name: Lint the code, run tests, build and push Docker image

on:
  push:
    # Match all branches *without* a / in the name.
    # This will exclude "sub" branches, such as "feature branches",
    # named something like: "feature/my-feature". Those branches will
    # likely contain "work in progress" code, so we will run the tests
    # on the local machine and avoid using up GitHub Actions credits
    # (if applicable, such as in `private` repositories).
    # Filter syntax info: https://docs.github.com/en/free-pro-team@latest/actions/reference/workflow-syntax-for-github-actions#filter-pattern-cheat-sheet
    branches:
      - '*'
  pull_request:
    # Since pull requests come from "third parties", we will automatically
    # test everything coming from the outside world, for good measure.
    # The `branches` tag could also be omitted, yielding the same effect here.
    branches:
      - '**'
  release:
    types: [published, edited]

jobs:
  # Run code tests before building the image, to ensure it is good to go
  build:
    name: Run code tests
    runs-on: ubuntu-latest
    strategy:
      matrix:
        python-version: [3.8] # Using a list so it's extensible for future use

    steps:
    - uses: actions/checkout@v2
    - name: Setting up Python ${{ matrix.python-version }}
      uses: actions/setup-python@v2
      with:
        python-version: ${{ matrix.python-version }}

    - name: Install dependencies
      run: |
        python -m pip install --upgrade pip
        pip install flake8
        if [ -f requirements.txt ]; then pip install -r requirements.txt; fi

    - name: Lint the code with flake8
      run: |
        # stop the build if there are Python syntax errors or undefined names
        flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
        # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
        flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics

    - name: Test with unittest
      run: |
        python -m unittest discover

  # Build and push the Docker image
  push_to_registry:
    name: Build and push Docker image to Docker Hub
    # ...but only when a `release` is `published`
    if: github.event_name == 'release' # && github.event.action == 'published'
    runs-on: ubuntu-latest
    steps:
      - name: Check out the repo
        uses: actions/checkout@v2
        # if: ${{ github.ref == 'ref/head/master' }} # Info: https://docs.github.com/en/free-pro-team@latest/actions/reference/context-and-expression-syntax-for-github-actions#about-contexts-and-expressions

      - name: Build and push image to the Docker Hub
        uses: docker/build-push-action@v1 # Info: https://github.com/docker/build-push-action/tree/releases/v1#tags
        # if: ${{ github.ref == 'ref/head/master' }}
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_PASSWORD }}
          repository: ${{ secrets.DOCKERHUB_REPOSITORY }}
          tag_with_ref: true # Info: https://github.com/docker/build-push-action/tree/releases/v1#tag_with_ref
          tag_with_sha: true # Info: https://github.com/docker/build-push-action/tree/releases/v1#tag_with_sha
          tags: latest
          # push: ${{ startsWith(github.ref, 'refs/tags/') }}