title: Root user inside Composer container
body: <p>I have a basic question when running running a <a href="https://hub.docker.com/r/composer/composer/" rel="noreferrer">Composer</a> in a Docker container.</p>
  
  <p>Is it OK to run the <code>composer</code> as user <code>root</code> inside the container?
  I am confusing that the owner of the created files (for example when using <code>composer require</code>) is <code>root</code>.</p>
  
  <p>Is run as <code>root</code> inside the container OK best practice?</p>