Session Owner problem

[mauitz]

Hello there!
I created a user login, but the session file is created as root and after the redirect post login, it's lost.

Here is an example of my session folder:
root@fc6efdbb31d0:/var/www/symfony# ll var/sessions/dev/ total 28 drwxr-xr-x 9 www-data www-data 288 Dec 15 13:19 . drwxr-xr-x 3 www-data www-data 96 Dec 15 11:39 .. -rw------- 1 root root 165 Dec 15 13:18 sess_06e7a9a8c7fba9cf4cbd88017b320951 -rw------- 1 root root 664 Dec 15 13:19 sess_2c5510a07cd78830c3ae819251fb1534 -rw------- 1 www-data www-data 664 Dec 15 12:52 sess_2dcc4a8d4e055368c644b65387f28c44 -rw------- 1 www-data www-data 664 Dec 15 12:38 sess_6c5b1267748fb14f1f9f264285c8152c -rw------- 1 www-data www-data 165 Dec 15 12:52 sess_865851975c66178b34c093a301f421c8 -rw------- 1 www-data www-data 165 Dec 15 12:37 sess_878aea56cb302b85317b81c2fb85e42c -rw------- 1 root root 115 Dec 15 13:19 sess_ffa652566dd353f6bb7dba4a36daae7a

The www-data files exists because I try to change the permissions, but the new files are created as root anyway.