fix fpm_host replacement

build/nginx/config/maps.conf

@@ -13,7 +13,7 @@ server {
     location ~ \.php$ {
         try_files $uri /index.php =404;
         fastcgi_split_path_info ^(.+\.php)(/.+)$;
-        fastcgi_pass $FPMHOST;
+        fastcgi_pass $FPM_HOST;
         fastcgi_index index.php;
         fastcgi_read_timeout 900;
         fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;