规定数据类型

docker/backend.Dockerfile

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+# Backend Dockerfile - NestJS
+FROM node:20-alpine AS builder
+
+WORKDIR /app
+
+# Copy package files
+COPY server/package*.json ./server/
+COPY shared/package*.json ./shared/
+
+# Install dependencies
+RUN cd server && npm ci
+
+# Copy source code
+COPY server/src ./server/src
+COPY server/tsconfig.json ./server/
+COPY server/nest-cli.json ./server/
+COPY shared ./shared
+
+# Build
+RUN cd server && npm run build
+
+# Production stage
+FROM node:20-alpine
+
+WORKDIR /app
+
+# Copy package files and install production dependencies
+COPY server/package*.json ./
+RUN npm ci --only=production
+
+# Copy built application
+COPY --from=builder /app/server/dist ./dist
+COPY shared ./shared
+
+# Create data directory
+RUN mkdir -p /app/data
+
+EXPOSE 3000
+
+CMD ["node", "dist/main.js"]