title: Docker sequence entries are not allowed here
body: <p>I'm having problems with docker-compose.yml file.
  This is error that is returning</p>
  
  <blockquote>
    <p>ERROR: yaml.scanner.ScannerError: sequence entries are not allowed
    here   in ".\docker-compose.yml", line 7, column 12</p>
  </blockquote>
  
  <p>and this is my docker-compose</p>
  
  <pre><code>version: "3"
  
  services:
    app:
      build:
        context: .
      ports: - "8000:8000"
      volumes:
        - ./app:/app
      command: &gt;
        sh -c "python manage.py runserver 0.0.0.0:8000"
  </code></pre>