title: Passenger start rails app after server reboot
body: <p>How to tell passenger, that it must start after reboot, and start rails app...
  Now i do this manually:</p>
  
  <pre><code>passenger start
  </code></pre>
  
  <p>But how, and what to configure in ngnix + passenger, that my app start automatically after server is rebooted? </p>