title: how to use .env.qa or .env.staging with create react app
body: <p>The CreateReactApp documentation shows that you can use a limited number of .env files.
  <a href="https://create-react-app.dev/docs/adding-custom-environment-variables/#adding-development-environment-variables-in-env" rel="noreferrer">https://create-react-app.dev/docs/adding-custom-environment-variables/#adding-development-environment-variables-in-env</a></p>
  
  <p>I want to use more .env files for other environments, but <code>.env.development</code> is  always used.</p>
  
  <p>How can I use other files? I've found this article but it is not working for me.
  <a href="https://medium.com/@tacomanator/environments-with-create-react-app-7b645312c09d" rel="noreferrer">https://medium.com/@tacomanator/environments-with-create-react-app-7b645312c09d</a></p>
  
  <p>I'm using <code>react-scripts</code> v3.4.1</p>