title: Starting thin server on different ports
body: <p>I'm a newbie o thin. I have a ruby on rails application. Today I can start the application normally, by the command</p>
  
  <pre><code>sudo thin start -d
  </code></pre>
  
  <p>We have created a new database for tests. (one is a clean database, and he other is for testing so can be messed up) on the database.yml file. </p>
  
  <p>I would like to start the same application in two different ports using the different databases.</p>
  
  <p>To start an application with the database I can use the ENV option of thin:</p>
  
  <pre><code>sudo thin start -d -e production -p 3040
  </code></pre>
  
  <p>It woks fine. But when I try to start the 'regular' server, it says thins is already running. How could I start both application in the ame thin command. Is there a way to make a configuration file for this?</p>