steps:
  test:
    image: python:3.11
    commands:
      - pip install -r requirements.txt
      - pytest -q

  build:
    image: docker:27-cli
    volumes:
      - name: dockersock
        path: /var/run/docker.sock
    environment:
      IMAGE: "flask-demo:latest"
    commands:
      - docker build -t "${IMAGE}" .

  deploy:
    image: docker:27-cli
    volumes:
      - name: dockersock
        path: /var/run/docker.sock
    commands:
      - docker compose up -d
    when:
      event:
        - push
      branch:
        - main

volumes:
  - name: dockersock
    host: /var/run/docker.sock    # <— строка, не объект!