log_format custom
  '$remote_addr - $request_time - [$time_local] - $msec - '
  '$request_id - $connection-$connection_requests - '
  '$scheme - $host - $server_port - '
  '$request_method - $request_uri - $server_protocol - $status - $request_completion - '
  '$bytes_sent - $request_length - "$http_referer" - "$http_user_agent" - '
  '$proxy_host - "$upstream_addr" - "$upstream_status" - "$upstream_connect_time" - "$upstream_response_time" ';

server {
    listen       80;
    server_name  localhost;

    root   /usr/share/nginx/html;
    index       index.html;
    error_page  500 502 503 504  /50x.html;
    access_log  /var/log/nginx/access.log  custom;
    client_max_body_size 0;

    location / {
        try_files   $uri  /index.html;
        add_header  Cache-Control  "no-cache";
    }

    location /api {
        proxy_pass                           $codex_url;
        proxy_set_header  Host               $host;
        proxy_set_header  X-Real-IP          $remote_addr;
        proxy_set_header  X-Forwarded-For    $proxy_add_x_forwarded_for;
        proxy_set_header  X-Forwarded-Proto  $scheme;
    }
}