fix: update environment variables in Dockerfile and use config for host in sitemap generation

Dockerfile

@@ -4,6 +4,11 @@ WORKDIR /app
 COPY package.json package-lock.json ./
 RUN npm ci
 COPY . .
+
+ENV PORT=5000
+ENV VERCEL_PROJECT_PRODUCTION_URL=http://194.59.214.243:5000
+ENV NEXT_PUBLIC_API_BASE_URL=http://194.59.214.243:5000/api
+
 RUN npm run build
 
 # Production stage

src/app/api/sitemapBuilder/route.ts

@@ -3,8 +3,7 @@
 // app/(api)/sitemap/route.ts
 import { NextResponse } from 'next/server';
 import { productCategoriesData } from '../product_categories/data';
-
-const HOST = 'http://localhost:3000';
+import { host } from '@/config';
 
 const pages = [
   '/',
@@ -30,7 +29,7 @@ export async function GET() {
         const loc = `/${locale}`;
         return `
           <url>
-            <loc>${HOST}${loc}${page}</loc>
+            <loc>${host}${loc}${page}</loc>
             <changefreq>weekly</changefreq>
             <priority>0.8</priority>
           </url>