title: How to start React and Cypress together
body: <p>I am trying to test a React.js app with Cypress, and I came across a problem.</p>
  
  <p>I'm able to start my app which boots up in a few seconds:</p>
  
  <pre><code>Compiled successfully!
  
  You can now view testapp in the browser.
  
    Local:            http://localhost:3000/
    On Your Network:  http://192.168.1.123:3000/
  
  Note that the development build is not optimized.
  To create a production build, use npm run build.
  </code></pre>
  
  <p>then run Cypress open and go through tests. Now the thing I would like to achieve is to run this setup headlessly in command line but I don't know how.</p>
  
  <p>How to boot up the app and then start the cypress test and exit? I'm trying to follow the guides from their official site but still no success.</p>