Fix build errors: add typed params, use client tags, and Docker build args

app/[locale]/contact/page.tsx

@@ -1,6 +1,14 @@
+'use client';
+
+import { use } from 'react';
 import { useTranslations } from 'next-intl';
 
-export default function ContactPage() {
+interface PageProps {
+  params: Promise<{ locale: string }>;
+}
+
+export default function ContactPage({ params }: PageProps) {
+  const { locale: _locale } = use(params);
   const t = useTranslations('Contact');
   return (
     <div className="pt-40 pb-24 px-6 md:px-24 min-h-screen bg-surface">