Test

    my $vhost_config = '
    server {
        listen 80;
        server_name ' . $servername . ' ' . $alias . ';
        root        ' . $vhostsroot . '/' . $username . '/data/www/' . $servername . ';
        access_log  ' . $vhostsroot . '/' . $username . '/data/logs/' . $servername . '.access.log;
        error_log   ' . $vhostsroot . '/' . $username . '/data/logs/' . $servername . '.error.log;
        index       index.php index.html index.htm;
        error_page  500 502 503 504 /50x.html;
        server_name_in_redirect off;
        client_max_body_size 12M;

        location = /50x.html
        {
            root /var/www/nginx-default;
        }

        location /
        {
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header Host $host;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_pass http://127.0.0.1:8080;
            #proxy_redirect http://' . $servername . ':8080/ /;
        }

        location ~* ^.+\.(jpg|jpeg|gif|png|rar|txt|tar|wav|bz2|exe|pdf|doc|xls|ppt|bmp|rtf|js|ico|css|zip|tgz|gz)$
        {
            root ' . $vhostsroot . '/' . $username . '/data/www/' . $servername . ';
            expires 30d;
            access_log off;
        }

        location ~ /\.ht
        {
            deny all;
        }
    }