update port phù hợp là 8001 và 3011

frontend/Dockerfile

@@ -13,7 +13,7 @@ COPY --from=deps /app/node_modules ./node_modules
 COPY . .
 
 # NEXT_PUBLIC_API_URL is baked in at build time via docker-compose build args
-ARG NEXT_PUBLIC_API_URL=http://backend:8000
+ARG NEXT_PUBLIC_API_URL=http://backend:8001
 ENV NEXT_PUBLIC_API_URL=$NEXT_PUBLIC_API_URL
 
 RUN mkdir -p /app/public && npm run build
@@ -32,6 +32,8 @@ COPY --from=builder /app/.next/standalone ./
 COPY --from=builder /app/.next/static ./.next/static
 COPY --from=builder /app/next.config.js ./
 
-EXPOSE 3000
+EXPOSE 3011
+
+ENV PORT=3011
 
 CMD ["node", "server.js"]