title: Meaning of ampersand (&) in docker-compose.yml file
body: <p>I recently came across this and was wondering what <code>&amp;django</code> means</p>
  
  <pre><code>version: '2'
  
  services:
    django: &amp;django
  </code></pre>
  
  <p>I can't see anything in the <a href="https://docs.docker.com/compose/compose-file/compose-file-v2/" rel="noreferrer">docs</a> related to this.</p>