Update nginx configuration for improved WebSocket handling

Author: CodeByAmrit

config.nginx

@@ -1,3 +1,6 @@
+# Docker DNS (MANDATORY)
+resolver 127.0.0.11 ipv6=off valid=30s;
+
 server {
     listen 80;
     server_name _;
@@ -16,11 +19,15 @@ server {
     # API & Frontend
     # ===============================
     location / {
-        proxy_pass http://streamvision:3000;
+        # Dynamic DNS resolution (CRITICAL)
+        set $upstream streamvision:3000;
+        proxy_pass http://$upstream;
+
         proxy_set_header Host $host;
         proxy_set_header X-Real-IP $remote_addr;
         proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
         proxy_set_header X-Forwarded-Proto $scheme;
+
         proxy_buffering off;
         proxy_request_buffering off;
     }
@@ -29,7 +36,9 @@ server {
     # WebSocket Streaming
     # ===============================
     location /ws {
-        proxy_pass http://streamvision:3000;
+        # Dynamic DNS resolution (CRITICAL)
+        set $upstream streamvision:3000;
+        proxy_pass http://$upstream;
 
         proxy_set_header Upgrade $http_upgrade;
         proxy_set_header Connection "upgrade";