WPEngine Reverse Proxy Nginx Config

nginx.conf

  user nginx;
  worker_processes 10;
  worker_rlimit_nofile 16384;
  pid        /var/run/nginx.pid;
  error_log /var/log/nginx/error.log warn;
  events {
    worker_connections 1024;
  }
  http {
    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
      '$status $body_bytes_sent "$http_referer" '
      '"$http_user_agent" "$http_x_forwarded_for"';
    access_log /var/log/nginx/access.log main;
    keepalive_timeout  65;
    # compress the assets
    gzip on;
    gzip_proxied any;
    server {
      listen 80;
      server_name blog-proxy;
      location /_ping {
        auth_basic off;
        access_log  off;
        root   /usr/share/nginx/html;
        stub_status on;
      }
      resolver 8.8.8.8;
      set $upstream_endpoint https://MY_WPENGINE_SUBDOMAIN.wpengine.com:443;
      location /blog/ {
        rewrite ^/blog/(.*) /$1  break;
        # proxy the things
        # https://www.poparide.com/blog/how-to-host-wpengine-blog-in-subdirectory-using-reverse-proxy/
        proxy_pass             $upstream_endpoint;
        proxy_set_header    Host                 MY_WPENGINE_SUBDOMAIN.wpengine.com;
        # strip /blog/ from the path
        # hide a range of other, unimportant headers
        proxy_hide_header       link;
        proxy_hide_header       wpe-backend;
        proxy_hide_header       x-pingback;
        # prevent forwarding of cookies
        # proxy_set_header    Cookie               "";
        # prevent passing of WP cookie back to client
        # proxy_hide_header       Set-Cookie;
        proxy_redirect https://floorhawk.wpengine.com/ https://www.MY_ACTUAL_DOMAIN.com/blog/;
        proxy_redirect http://floorhawk.wpengine.com/ https://www.MY_ACTUAL_DOMAIN.com/blog/;
        # for wp-admin
        proxy_cookie_domain floorhawk.wpengine.com www.MY_ACTUAL_DOMAIN.com;
        proxy_cookie_path / /blog/;
        proxy_cookie_path ^/(.*) /blog/$1;
        # to prevent wpengine from blocking our ips
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        # replace all instances of the WPEngine subdomain from the response
        proxy_set_header Accept-Encoding "";
        sub_filter_types   text/html text/css text/xml application/json;
        sub_filter         'MY_WPENGINE_SUBDOMAIN.wpengine.com' 'www.MY_ACTUAL_DOMAIN.com/blog';
        sub_filter_once     off;
      }
    }
  }