Update Dockerfile

Dockerfile

@@ -1,10 +1,24 @@
-FROM node:18-alpine
+# 构建阶段
+FROM node:18-alpine AS builder
 
 WORKDIR /app
 
+COPY package*.json ./
+RUN npm ci
+
 COPY . .
-RUN npm install --production && npm run build
+RUN npm run build
+
+# 生产阶段
+FROM node:18-alpine
+
+WORKDIR /app
+
+COPY --from=builder /app/build /app/build
+COPY --from=builder /app/node_modules /app/node_modules
+
+ENV NODE_ENV=production
 
 EXPOSE 3000
 
-CMD [ "npm", "run", "start" ]
+CMD ["npm", "start"]