title: Deploy Nodejs on Heroku fails serving static files located in subfolders
body: <p>I'm deploying a NodeJs application using Heroku. Everything works fine except a little issue serving static files.</p>
  
  <p>I have the following configuration </p>
  
  <pre><code>app.use(express.static(__dirname + '/htdocs'));
  </code></pre>
  
  <p>It works fine except when I try to serve static files located in sub folders.</p>
  
  <blockquote>
    <p>www.example.com/bar.js  // this serves the file /htdocs/bar.js</p>
    
    <p>www.example.com/foo/bar.js  // this can't find the file
    /htdocs/foo/bar.js</p>
  </blockquote>
  
  <p>I forgot to say that on my local environment everything works fine, might be something with heroku but I can't find the reason. Did someone had this problem before? Solutions?</p>
  
  <p>Thanks!</p>