Why Drone CI can be interesting for you? Example of Bitbucket Pipelines configuration

bitbucket-pipelines.yml

definitions:
  caches:
    poetry-path: /root/.poetry
    poetry-venv: /root/.cache/pypoetry/virtualenvs

pipelines:
  default:
    - step:
        name: deps-3.7
        image: python:3.7
        caches:
          - poetry-path
          - poetry-venv
        script:
          - poetry install -vv
    - step:
        name: deps-3.8
        image: python:3.8
        caches:
          - poetry-path
          - poetry-venv
        script:
          - poetry install -vv
    - step:
        name: lint-3.8
        image: python:3.8
        caches:
          - poetry-path
          - poetry-venv
        script:
          - poetry run black --check --diff .
          - poetry run flake8 .
          - poetry run isort --check-only --diff --recursive
    - step:
        name: test-3.7
        image: python:3.7
        caches:
          - poetry-path
          - poetry-venv
        script:
          - poetry run pytest .
    - step:
        name: test-3.8
        image: python:3.8
        caches:
          - poetry-path
          - poetry-venv
        script:
          - poetry run pytest .
    - step:
        name: publish-3.8
        image: python:3.8
        caches:
          - poetry-path
          - poetry-venv
        script:
          - poetry publish --build