title: configure nginx for it to support file system
body: <p>I am inside <em>/root</em> directory and I have a folder inside it called <em>testfolder</em>. Inside that folder I have a bunch of folders and subfolders which I want to host on the nginx server.
  I am running the following command to start my Nginx server:</p>
  <pre><code>docker run --name file-server -v $(pwd)/testfolder:/app -p 8080:80 -d nginx
  </code></pre>
  <p><em>/etc/nginx/sites-available/default</em> file has the following contents:</p>
  <pre><code>    location /testfolder {
      # First attempt to serve request as file, then
      # as directory, then fall back to displaying a 404.
              alias /root/testfolder/;
              autoindex on;
      try_files $uri $uri/ =404;
  }
  </code></pre>
  <p>Now when I start my server and hit /testfolder, It gives me a 403 error</p>