How to set up Symfony2 on Cloud9?

Question

I've setup Symfony2 on Cloud9 following this Symfony on Cloud9 Guide. When I preview the running application at (https://appname-username.c9users.io) it just serves up my file list:

Index of /
Name    Last modified    Size    Description
LICENSE
etc...

• Have I failed to setup a configuration somewhere?
• Should I be pointing my browser to a different url?

Thank you for help!

---

• I've followed this Symfony on Cloud9 Guide multiple times.
• I have this issue regardless of whether I install the acmedemo.
• I haven't been able to find the answer in The Symfony Book.
• This Stackoverflow did not help: Symfony framework on Cloud9.

Answer 1

The New Run Configuration window clearly says:

Starting Apache httpd, serving https://appname-username.c9users.io/web/app_dev.php.

Point browser at: https://appname-username.c9users.io/web/app_dev.php