title: Docker: Error starting container: Unable to load the AUFS module
body: <p>After <code>ssh</code>ing into my ec2 instance using <code>vagrant</code> on <code>ubuntu</code>, I tried running </p>
  
  <p><code>sudo docker run -i -t ubuntu echo 'hello'</code>, but I get this error:</p>
  
  <p><code>Error starting container da3124903fc4: Unable to load the AUFS module</code></p>
  
  <p>How can I load this <code>AUFS module</code>?</p>
  
  <p>I already have <code>aufs-tools</code> installed.</p>