Add Dockerfile and Nginx configuration for multi-stage build setup

nginx.conf

@@ -0,0 +1,29 @@
+events {}
+
+http {
+    include /etc/nginx/mime.types; # <-- ADD THIS LINE
+
+    server {
+        listen 80;
+        server_name localhost;
+
+        # Serve the static frontend files
+        location / {
+            root   /usr/share/nginx/html;
+            index  index.html index.htm;
+            try_files $uri $uri/ /index.html;
+        }
+
+        # Proxy API requests to the Go backend
+        location /api/ {
+            proxy_pass http://localhost:8081;
+            proxy_http_version 1.1;
+            proxy_set_header Upgrade $http_upgrade;
+            proxy_set_header 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 X-Forwarded-Proto $scheme;
+        }
+    }
+}