Update nginx.conf

nginx.conf

@@ -8,6 +8,12 @@ events {
 http {
     default_type application/octet-stream;
 
+    # Maps for handling WebSocket connections
+    map $http_upgrade $connection_upgrade {
+        default upgrade;
+        ''      close;
+    }
+
     server {
         listen 80;
 
@@ -18,23 +24,25 @@ http {
 
         # Health check location at a secret path
         location /secret-health-path {
-            # This could be a simple return or proxy to an actual health check endpoint
+            # A simple response to indicate Nginx is running
             add_header Content-Type text/plain;
             return 200 'Healthy';
         }
 
         location / {
-            # Use the placeholders for the proxy pass
+            # Proxy pass to the backend using environment variables
             proxy_pass ${PROTOCOL}://${BACKEND_ADDRESS}:${BACKEND_PORT};
+            
+            # General proxy settings
             proxy_http_version 1.1;
             proxy_set_header Upgrade $http_upgrade;
-            proxy_set_header Connection "Upgrade";
+            proxy_set_header Connection $connection_upgrade;
             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 Accept-Encoding "";
             proxy_buffering off;
-            proxy_ssl_verify off;  # Skip SSL verification, be cautious
+            proxy_ssl_verify off;  # Be cautious with this in a production environment
         }
     }
 }