title: Replace value of a line in a yml with bash
body: <pre><code>web:
    image: nginx
    volumes:
      - "./app:/src/app"
    ports:
      - "3030:3000"
      - "35729:35729"
  </code></pre>
  
  <p>I would like to have a bash script to replace the <code>nginx</code> for an argument with bash script.  </p>
  
  <pre><code>./script apache
  </code></pre>
  
  <p>Will replace <code>nginx</code> for <code>apache</code></p>