It is worthwhile pointing out at the very beginning that setting up live mirrors for websites like Wikipedia is strongly discouraged. As described in here, live mirrors put more strains on WMF servers. However, if it is intended for private use, here are the steps to create such mirrors on your own server. Use at your own risks.
How to install WordPress on Arch Linux with Nginx and uWSGI
Though ArchWiki has a page that explains the installation process of WordPress, it doesn’t cover the configuration for Nginx. (Yes, I prefer Nginx to Apache.) Fortunately, the NGINX wiki has provided some good examples. Here we combine them with uWSGI to avoid modifying global
php.ini so it remains intact and secure.