diff --git a/backend/Dockerfile b/backend/Dockerfile
index de47d81..420b0f2 100644
--- a/backend/Dockerfile
+++ b/backend/Dockerfile
@@ -3,6 +3,12 @@ FROM node:20-alpine
 WORKDIR /usr/src/app
 
 COPY package*.json ./
+
+# Set timezone to Asia/Shanghai
+RUN apk add --no-cache tzdata
+ENV TZ=Asia/Shanghai
+ENV NODE_ENV=production
+
 RUN npm install
 
 COPY . .