config.php override does not work

[kemeris2000]

After docker compose up I am changing config.php file content in 'docker-groupoffice_goetc' volume

root@6a684b5d7cd7:/var/www/html# cat /etc/groupoffice/config.php
<?php
$config['db_name'] = "Office";
$config['db_host'] = "db";
$config['db_user'] = "Office";
$config['db_pass'] = "Officenewpassword";
$config['db_port'] = 3306;
$config['file_storage_path'] = "/var/lib/groupoffice";
$config['tmpdir'] = "/tmp/groupoffice";
$config['debug'] = false;
$config['business'] = array (
        'studio' =>
                array (
                        'package' => 'studio',
                )
        );
$config['product_name'] = 'Office';
$config['title'] = "Ofisas";
$config['default_timezone'] = 'Europe/Vilnius';

root@6a684b5d7cd7:/var/www/html# php -l /etc/groupoffice/config.php
No syntax errors detected in /etc/groupoffice/config.php

but these setting does not apply, for example timezone is still 'Europe/Amsterdam' in GUI.

[kemeris2000]

Figuted out