PhpMyAdmin setup & nginx with alias & autologin

nginx.conf.d.pma.conf

server {
        listen 0.0.0.0:80;
        server_name pma;
        root /usr/share/phpmyadmin/;
        index index.php index.html index.htm;
        location ~ .php$ {
            try_files $uri =404;
            fastcgi_pass unix:/var/run/php5-fpm.sock;
            fastcgi_index index.php;
            include /etc/nginx/fastcgi_params;
        }
}

phpmyadmin.conf.d.tux.inc.php

<?php
/* Servers configuration */
$i = 0;

/* Server: localhost [1] */
$i++;
$cfg['Servers'][$i]['verbose'] = '';
$cfg['Servers'][$i]['host'] = 'localhost';
$cfg['Servers'][$i]['port'] = '';
$cfg['Servers'][$i]['socket'] = '';
$cfg['Servers'][$i]['connect_type'] = 'tcp';
$cfg['Servers'][$i]['extension'] = 'mysqli';
$cfg['Servers'][$i]['auth_type'] = 'config';
$cfg['Servers'][$i]['user'] = 'root';
$cfg['Servers'][$i]['password'] = '';
$cfg['Servers'][$i]['verbose_check'] = false;
//$cfg['Servers'][$i]['only_db'] = array (
//  0 => 'PUBLIC_DB_FOR_THIS_PMA',
//);
$cfg['Servers'][$i]['hide_db'] = 'information_schema|performance_schema|phpmyad$
;