Add a special header for authlib-injector for / path

docker/nginx/account.ely.by.conf.template

@@ -35,6 +35,10 @@ server {
     }
 
     location / {
+        if ($request_uri = '/') {
+            more_set_headers "X-Authlib-Injector-API-Location: /api/authlib-injector";
+        }
+
         root       $frontend_path;
         access_log off;
         etag       on;

docker/nginx/nginx.conf

@@ -1,3 +1,5 @@
+load_module /usr/lib/nginx/modules/ngx_http_headers_more_filter_module.so;
+
 user nginx;
 worker_processes auto;