nginx.conf

    server {                                                          
        listen 80;
        server_name dev.myapp.com;
        root /var/www/staging/current/public;
        passenger_enabled on;
        rails_env staging;
    }

    server {
        listen 80;
        server_name www.myapp.com;
        root /var/www/default/current/public;
        passenger_enabled on;
    }