infra: fix Dockerfile for web

web/Dockerfile

@@ -79,4 +79,4 @@ EXPOSE ${PORT}
 # HEALTHCHECK --interval=30s --timeout=30s --start-period=5s --retries=3 \
 #   CMD wget -q -O - http://localhost:${PORT}/api/health || exit 1
 
-CMD ["node", "server.js"] 
+CMD ["node", "server"] 

web/next.config.js

@@ -5,6 +5,7 @@ const nextConfig = {
     locales: ['en-US'],
     defaultLocale: 'en-US',
   },
+  output: 'standalone',
 
   async redirects() {
     return [