nginx_erpnext.conf

server {
	listen 80;
  [...]
  
  location / {
	  [...]
	}
  
  # **** ADD THIS SECTION TO YOUR FILE ****
  # Add the support for french "fr" and english "en" on Erpnext Website section
  
  set $test "";
         set $language $cookie_language;

   #Exclude URL begin by:
  if ( $request_uri !~* ^/(fr/|en/|socket\.io/|desk[^\w-]?|\?|assets/|private/|public/) ) {
       set $test "${request_method}/${language}";
    }


   #Exclude file request
  if ( $request_uri ~* "^[^?&=:]+(\.js|\.woff.?|\.\w{3}|\.\w{4})$" ) {
      set $test "";
    }


   if ( $test ~* ^GET/(fr|en)$ ) {
             return 302 $scheme://$host/$language$request_uri;
        }

    location /en/ {
          set $language "en";
                   rewrite ^/en(.*)$ $1?_lang=en;
               }

    location /fr/ {
          set $language "fr";
                   rewrite ^/fr(.*)$ $1?_lang=fr-CA;
               }

    add_header Set-Cookie "language=$language;Path=/";  
  # **** END SECTION ****
  
  location @webserver {
    [...] 
  }
  
  [...]

can u explain a little bit how to do this
as i need my website homepage bilingual