docker-compose start "ERROR: No containers to start" : <p>I am trying to use Docker Compose (with Docker Machine on Windows) to launch a group of Docker containers. </p>

<p>My docker-compose.yml:</p>

<pre><code>version: '2'
services:
  postgres:
    build: ./postgres
    environment:
      - POSTGRES_PASSWORD=mysecretpassword
  frontend:
    build: ./frontend
    ports:
      - "4567:4567"
    depends_on:
      - postgres
  backend:
    build: ./backend
    ports:
       - "5000:5000"
    depends_on:
       - postgres
</code></pre>

<p><code>docker-compose build</code> runs successfully. When I run <code>docker-compose start</code> I get the following output:</p>

<pre><code>Starting postgres ... done
Starting frontend ... done
Starting backend ... done
ERROR: No containers to start
</code></pre>

<p>I did confirm that the docker containers are not running. How do I get my containers to start?</p>
