fix: update code from next 13 to next 15

Dockerfile

@@ -1,4 +1,4 @@
-FROM node:18-alpine AS base
+FROM node:22-alpine AS base
 
 # Install dependencies only when needed
 FROM base AS deps
@@ -55,4 +55,4 @@ EXPOSE 3000
 
 ENV PORT=3000
 
-CMD ["node", "server.js"]
+CMD ["node", "server.js"]

next-env.d.ts

@@ -2,4 +2,4 @@
 /// <reference types="next/image-types/global" />
 
 // NOTE: This file should not be edited
-// see https://nextjs.org/docs/basic-features/typescript for more information.
+// see https://nextjs.org/docs/app/api-reference/config/typescript for more information.

next.config.js

@@ -1,10 +1,7 @@
 /** @type {import('next').NextConfig} */
 module.exports = {
   output: 'standalone',
-  experimental: {
-    serverActions: true,
-    instrumentationHook: true
-  },
+  experimental: {},
   i18n: {
     locales: ['en', 'sv'],
     defaultLocale: 'en',