Add nginx configuration file for serving built assets and handling routing

Dockerfile

@@ -22,8 +22,8 @@ FROM nginx:alpine
 # Copy built assets from builder stage
 COPY --from=builder /app/dist /usr/share/nginx/html
 
-# Copy nginx configuration (optional - using default)
-# COPY nginx.conf /etc/nginx/nginx.conf
+# Copy nginx configuration
+COPY nginx.conf /etc/nginx/conf.d/default.conf
 
 # Expose port 80
 EXPOSE 80

nginx.conf

@@ -0,0 +1,14 @@
+server {
+    listen 80;
+    server_name localhost;
+    root /usr/share/nginx/html;
+    index index.html;
+
+    # Handle React Router - serve index.html for all routes
+    location / {
+        try_files $uri $uri/ /index.html;
+    }
+
+    # Error pages
+    error_page 404 /index.html;
+}