Nginx conf to work with Cloudflare routing

nginx.conf

user  nginx;
worker_processes 10;

pid        /var/run/nginx.pid;

events {
    worker_connections  8192;
}

http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;
    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;
    error_log   /var/log/nginx/error.log;
    sendfile        on;
    
    client_max_body_size 8M;
    client_body_buffer_size 15k;
    client_header_buffer_size 2k;
    large_client_header_buffers 2 1k;

    client_body_timeout 12;
    client_header_timeout 12;
    keepalive_timeout 15;
    send_timeout 10;

    gzip on;
    gzip_comp_level 2;
    gzip_min_length 2000;
    gzip_proxied expired no-cache no-store private auth;
    gzip_types text/plain application/x-javascript text/xml text/css application/xml;

    set_real_ip_from 103.21.244.0/22;
    set_real_ip_from 103.22.200.0/22;
    set_real_ip_from 103.31.4.0/22;
    set_real_ip_from 104.16.0.0/12;
    set_real_ip_from 108.162.192.0/18;
    set_real_ip_from 131.0.72.0/22;
    set_real_ip_from 141.101.64.0/18;
    set_real_ip_from 162.158.0.0/15;
    set_real_ip_from 172.64.0.0/13;
    set_real_ip_from 173.245.48.0/20;
    set_real_ip_from 188.114.96.0/20;
    set_real_ip_from 190.93.240.0/20;
    set_real_ip_from 197.234.240.0/22;
    set_real_ip_from 198.41.128.0/17;
    set_real_ip_from 2400:cb00::/32;
    set_real_ip_from 2606:4700::/32;
    set_real_ip_from 2803:f800::/32;
    set_real_ip_from 2405:b500::/32;
    set_real_ip_from 2405:8100::/32;
    set_real_ip_from 2c0f:f248::/32;
    set_real_ip_from 2a06:98c0::/29;

    real_ip_header CF-Connecting-IP;

    include /etc/nginx/conf.d/*.conf;
}