title: Assets under /web/bundles not found in Symfony2 production
body: <p>I have deployed a Symfony2 app to Heroku with CHH heroku-buildpack-php.</p>
  
  <p>After pushing the code to heroku, I use 'heroku run bash' to:<br/>
  1) php app/console cache:clear --env=prod<br/>
  2) php app/console assets:install --symlink<br/>
  3) php app/console assetic:dump --env=prod<br></p>
  
  <p>Anyhow, dumped assets on /web/bundles/... are not served and they show a 404 Not Found (I mean, each asset separately is not found). But for example, /web/favicon.ico is properly served to the client.</p>
  
  <p>This is not happening in dev mode, in my localhost.</p>
  
  <p>Could it be any permission issue on the server? Should I run those commands in Procfile, and how?</p>
  
  <p>Thanks in advance.</p>