title: What does RUN yes | mean in a docker file?
body: <p>I'm not great at Docker and trying to learn a little more.</p>
  <p>What does the <strong>RUN yes |</strong> <em>blah blah blah</em>  mean? I found it on the web when trying to fix docker and xdebug, which I'm still not finished doing but to fix it I have to start understanding more of the underlying components of how Docker is supposed to work.</p>
  <p>This page (frustratingly) has NO information about it: <a href="https://docs.docker.com/engine/reference/run/" rel="nofollow noreferrer">https://docs.docker.com/engine/reference/run/</a></p>
  <p><a href="https://i.stack.imgur.com/MxptN.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/MxptN.png" alt="enter image description here" /></a></p>