nginx development bind domain to port

gistfile1.txt

server {
    resolver 127.0.0.1; 
    listen 80;
    server_name "~^(?P<app_group>\w+)?(?:\.)?(?P<app_name>\w+)-(?P<app_port>\d{4})\.devel$";
    root /work/$app_name/public;
    location / {
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_pass http://localhost:$app_port;
        proxy_redirect http://localhost:$app_port/ /;
    }
    error_log /usr/local/var/log/apps.log warn;
}