feat: enable standalone output mode in Next.js configuration

frontend/next.config.ts

@@ -1,8 +1,9 @@
 import type { NextConfig } from "next";
 
 const nextConfig: NextConfig = {
-	/* config options here */
+        /* config options here */
-	reactCompiler: true,
+        reactCompiler: true,
+        output: 'standalone',
 };
 
 export default nextConfig;