Index: frontend/nginx.conf
===================================================================
--- frontend/nginx.conf	(revision 545738f221bcda7888ec3b35279f55d0f80c4faa)
+++ frontend/nginx.conf	(revision 545738f221bcda7888ec3b35279f55d0f80c4faa)
@@ -0,0 +1,31 @@
+server {
+    listen 80;
+
+    root /usr/share/nginx/html;
+    index index.html;
+
+    # Proxy API calls to the backend container
+    location /api/ {
+        proxy_pass http://backend:8080/api/;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+    }
+
+    # Yahoo Finance proxy (replaces the Vite dev proxy)
+    location /yahoo/ {
+        proxy_pass https://query1.finance.yahoo.com/;
+        proxy_ssl_server_name on;
+        proxy_set_header Host query1.finance.yahoo.com;
+    }
+
+    location /yahoo2/ {
+        proxy_pass https://query2.finance.yahoo.com/;
+        proxy_ssl_server_name on;
+        proxy_set_header Host query2.finance.yahoo.com;
+    }
+
+    # SPA fallback
+    location / {
+        try_files $uri $uri/ /index.html;
+    }
+}