fix: add ipv6 support for internal nginx proxy

nginx.conf

@@ -5,6 +5,7 @@ events {
 http {
     server {
         listen 7575;
+        listen [::]:7575;
 
         # Route websockets traffic to port 3001
         location /websockets {
@@ -25,4 +26,4 @@ http {
             client_max_body_size 32M;
         }
     }
-}
+}