title: How to serve static files via Rack?
body: <p>I am currently developing a Rack-based application and want to redirect all file requests (e.g. <code>filename.filetype</code>) to a specified folder.</p>
  <p><code>Rack::Static</code> only supports file requests for a special folder(e.g. &quot;/media&quot;).</p>
  <p>Do I have to write my own Rack middleware or does an out-of-the-box solution exist?</p>