title: Server doesn't work with HOST variable in .env (Create React App)
body: <p>I use create-react-app and trying to set <code>HOST=custom.local</code> variable with <code>.env</code> file.
  But it is always ignored with the message:</p>
  <pre><code>Attempting to bind to HOST environment variable: custom.localhost
  If this was unintentional, check that you haven't mistakenly set it in your shell.
  </code></pre>
  <p>Also, I see this:</p>
  <pre class="lang-sh prettyprint-override"><code>echo $HOST
  M1-Air // &lt;- my laptop name
  </code></pre>
  <p>So, how I understand this variable is already set and <code>dotenv</code> within CRA won't overwrite it and just ignores, but any suggestions on what I need to do to set my custom HOST variable for CRA anyway?</p>
  <p>I've found a similar issue on GitHub but it doesn't have any suggestions on how to resolve it:
  <a href="https://github.com/facebook/create-react-app/issues/4307" rel="nofollow noreferrer">https://github.com/facebook/create-react-app/issues/4307</a></p>