title: docker-compose not showing any changes to code
body: <p>I am working on a project that uses <code>docker-compose up</code> to start up and run. I am not very familiar with docker-compose and I couldn't really find an answer in the docs. According to the docs the <code>up</code> command rebuilds the container from the docker file, however this does not seem to happen.</p>
  
  <p>When I try to add <code>print</code> commands for debugging nothing happens. The program already throws a few print commands and I tried changing those to be sure, and they always print the same. Do I have to add something to the <code>up</code> command to make the container rebuild? </p>
  
  <p>docker-compose/yml:</p>
  
  <pre><code>dockbrato:
    build: .
    volumes:
      - "/sys:/sys"
      - "/var/run/docker.sock:/var/run/docker.sock"
  </code></pre>