Use /assets/ for vendored static assets

 
 location  /X/  {
     internal;
-    alias  /home/admin/app/run/;
+    alias  $run_dir/;
 }
 
 location  /hls  {

     rtmp_stat  all;
 }
 
+location  /assets/  {
+    alias  $run_dir/media/assets/;
+}
+
 location  /chats/  {
     alias  $run_dir/media/chat/mediasoup-demo/server/public/;
 }