update

Dockerfile

@@ -14,9 +14,9 @@ COPY frontend/src ./src
 COPY frontend/public ./public
 COPY frontend/next.config.js ./
 COPY frontend/tsconfig.json ./
-COPY frontend/next-env.d.ts ./
 COPY frontend/tailwind.config.js ./
 COPY frontend/postcss.config.js ./
+# Note: next-env.d.ts is auto-generated by Next.js, not needed for build
 
 # Build frontend
 RUN npm run build