title: docker-compose: Unsupported config option for services.db: 'jupyter'
body: <p>I am trying to learn how to utilize docker-compose and was following instructions until I received an error. Here's my docker-compose file.</p>
  
  <pre><code>version: '3'
  services:
    db:
      image: postgres:11.2-alpine
      volumes:
        - ./pgdata:/var/lib/postgresql/data
      environment:
        - POSTGRES_USER=${POSTGRES_USER}
        - POSTGRESS_PASSWORD=${POSTGRESS_PASSWORD}
      jupyter:
        images: jupyter/scipy-notebook:17aba6048f44
        volume:
          - ./:/home/notebook
        ports:
          - "8888:8888"
  
  </code></pre>
  
  <p>When I go back and enter "docker-compose up -d --build", I would get an error saying</p>
  
  <pre><code>The Compose file './docker-compose.yml' is invalid because:
  Unsupported config option for services.db: 'jupyter'
  </code></pre>
  
  <p>My docker-compose version is 1.23.2 and trying to run this on Mac. Any ideas? thanks in advance.
  I'm sorry, I'm not good at English, so I'm referring to <a href="https://stackoverflow.com/questions/55858549/unsupported-config-option-for-services-db-images">this question.</a></p>