• 'apps' stores the different application. Usually, the application will be copyied to '/var/www'

• 'config' stores the relevant config file for the application respectively, which should be copied to '/etc/apache2/sites-available'

• execute 'sudo a2ensite ' to enable the application in apache

• edit /etc/hosts and add the mappings for the application

    <ip>  www.xxx.com   localhost
  

• execute 'curl www.xxx.com'