config to used in Subfolder

[madvik]

Hi,

Here my configuration
$use_auth = true;
$root_path = $_SERVER['DOCUMENT_ROOT'].'/sauv';
$root_url = 'https://mywebsite.net/sauv';
$http_host = $_SERVER['HTTP_HOST'].'/sauv';

But when I used it, I log in :

How can we configure it for use it in subfolder ?

thanks

[prasathmani]

$root_path = $_SERVER['DOCUMENT_ROOT'].'/sauv';
$root_url = 'sauv';