Add step 5 configurations - test:prod script

Author: radubrehar

Diff for: next.config.mjs

@@ -1,6 +1,7 @@
 /** @type {import('next').NextConfig} */
 const nextConfig = {
   reactStrictMode: true,
+  output: "export",
   pageExtensions: ["page.tsx", "page.ts", "page.js"],
 };