fix: restore configs

Author: ceelogre

beta_.conf

@@ -3,19 +3,14 @@ server {
     server_name  localhost;
 
     set $WS_BACKEND_URL ws://localhost:4000;
-    set $HTTP_BACKEND_URL http://localhost:4000;
 
     location / {
         root   /usr/share/nginx/html;
         index  index.html index.htm;
         try_files $uri /index.html;                 
-
-        set $backend $HTTP_BACKEND_URL;
-
-        if ($http_upgrade = 'websocket') {
-            set $backend $WS_BACKEND_URL;
-        }
-        proxy_pass $backend;
+    }
+    location /ws {
+        proxy_pass $WS_BACKEND_URL;
         proxy_http_version 1.1;
         proxy_set_header Upgrade $http_upgrade;
         proxy_set_header Connection "Upgrade";