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site3/Dockerfile

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+# Build stage
+FROM node:20-alpine AS builder
+
+WORKDIR /app
+
+COPY package*.json ./
+RUN npm install
+
+COPY . .
+RUN npm run build
+
+# Production runner stage
+FROM node:20-alpine
+
+WORKDIR /app
+
+ENV NODE_ENV=production
+ENV PORT=3000
+ENV HOST=0.0.0.0
+
+COPY --from=builder /app/.output ./.output
+
+EXPOSE 3000
+
+CMD ["node", ".output/server/index.mjs"]