pipeline:
  build:
    image: python:latest
    when:
      event: tag
    secrets: [ twine_username, twine_password ]
    commands:
      - python --version
      - pip install -U build twine --quiet
      - python -m build
      - python -m twine upload --skip-existing --repository testpypi -u $TWINE_USERNAME -p $TWINE_PASSWORD dist/*