docker-flarum/rootfs/etc/nginx/nginx.conf

worker_processes auto;
pid /tmp/nginx.pid;
daemon off;

events {
  worker_connections 1024;
  use epoll;
}

http {

  include /etc/nginx/mime.types;
  default_type application/octet-stream;

  access_log off;
  error_log /tmp/ngx_error.log error;

  sendfile on;
  keepalive_timeout 15;
  keepalive_disable msie6;
  keepalive_requests 100;
  tcp_nopush on;
  tcp_nodelay on;
  server_tokens off;

  fastcgi_temp_path /tmp/fastcgi 1 2;
  client_body_temp_path /tmp/client_body 1 2;
  proxy_temp_path /tmp/proxy 1 2;
  uwsgi_temp_path /tmp/uwsgi 1 2;
  scgi_temp_path /tmp/scgi 1 2;

  server {
    listen <FLARUM_PORT>;
    charset utf-8;

    root /flarum/app/public;
    index index.php;

    client_max_body_size <UPLOAD_MAX_SIZE>;
    fastcgi_buffers 64 4K;

    include /flarum/app/.nginx.conf;

    # PHP Backend
    # --------------------------------------
    location ~ \.php$ {
      try_files $uri =404;
      include /etc/nginx/fastcgi_params;
      fastcgi_split_path_info ^(.+\.php)(/.*)$;
      fastcgi_index index.php;
      fastcgi_pass unix:/run/php/php8-fpm.sock;
      fastcgi_intercept_errors on;
      fastcgi_request_buffering off;
      fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
      fastcgi_param PATH_INFO $fastcgi_path_info;
      fastcgi_param HTTP_PROXY "";
      fastcgi_param REMOTE_ADDR $http_x_real_ip;
    }

    include /etc/nginx/flarum/custom-vhost-flarum.conf;
  }
}