title: Pass service params to docker-compose up
body: <p>I have the following docker-compose.yml:</p>
  
  <pre><code>version: '2'
  services:
    strongloop:
      image: node:5.11-onbuild
      links:
        - mongodb
    mongodb:
      image: mongo:3.3
      volumes:
        - ./mongo/mongo.conf:/etc/mongo.conf
  </code></pre>
  
  <p>Now I need to start the mongodb service with the flag <code>-f /etc/mongo.conf</code> and parallel starts the strongloop service and link them. Until now I did this with <code>docker-compose up</code> because I didn't need some flags.</p>
  
  <p>How can I pass this flag to <code>docker-compose up</code>?</p>
  
  <p>Or is there an other command that links the container and where I can pass some params to the specific service?</p>
  
  <p>Edit:</p>
  
  <p><code>docker-compose up mongodb -f /etc/mongo.conf strongloop</code> returns <code>ERROR: No such service: -f</code></p>
  
  <p><code>docker-compose up "mongodb -f /etc/mongo.conf" strongloop</code>
  returns <code>ERROR: No such service: mongodb -f /etc/mongo.conf</code></p>