perf: 优化Dockerfile避免chown -R耗时

- 先创建用户再安装依赖
- 使用 COPY --chown 直接设置文件权限
- 移除 chown -R nestjs:nodejs /app 步骤
- 显著减少 Docker 构建时间

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/services/identity-service/Dockerfile

@@ -33,7 +33,9 @@ RUN ls -la dist/src/ && test -f dist/src/main.js
 # Production stage - use Debian slim for OpenSSL compatibility
 FROM node:20-slim
 
-WORKDIR /app
+# Create non-root user first
+RUN groupadd -g 1001 nodejs && \
+    useradd -u 1001 -g nodejs nestjs
 
 # Install OpenSSL, CA certificates, and curl for health checks
 RUN apt-get update && apt-get install -y --no-install-recommends \
@@ -42,17 +44,24 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     curl \
     && rm -rf /var/lib/apt/lists/*
 
+# Create app directory with correct ownership
+RUN mkdir -p /app && chown nestjs:nodejs /app
+WORKDIR /app
+
+# Switch to non-root user before installing dependencies
+USER nestjs
+
 # Install production dependencies + ts-node for seed
-COPY package*.json ./
-COPY tsconfig*.json ./
+COPY --chown=nestjs:nodejs package*.json ./
+COPY --chown=nestjs:nodejs tsconfig*.json ./
 RUN npm ci --only=production && npm install ts-node typescript @types/node --save-dev
 
 # Copy Prisma schema and generate client
-COPY prisma ./prisma/
+COPY --chown=nestjs:nodejs prisma ./prisma/
 RUN DATABASE_URL="postgresql://user:pass@localhost:5432/db" npx prisma generate
 
 # Copy built files
-COPY --from=builder /app/dist ./dist
+COPY --chown=nestjs:nodejs --from=builder /app/dist ./dist
 
 # Create startup script that runs migrations and seed before starting the app
 RUN echo '#!/bin/sh\n\
@@ -64,16 +73,6 @@ npx prisma db seed || echo "Seed completed (or already seeded)"\n\
 echo "Starting application..."\n\
 exec node dist/src/main.js\n' > /app/start.sh && chmod +x /app/start.sh
 
-# Create non-root user
-RUN groupadd -g 1001 nodejs && \
-    useradd -u 1001 -g nodejs nestjs
-
-# Change ownership of app directory
-RUN chown -R nestjs:nodejs /app
-
-# Switch to non-root user
-USER nestjs
-
 ENV NODE_ENV=production
 
 # Expose port

backend/services/referral-service/Dockerfile

@@ -33,7 +33,9 @@ RUN ls -la dist/ && test -f dist/main.js
 # Production stage - use Debian slim for OpenSSL compatibility
 FROM node:20-slim
 
-WORKDIR /app
+# Create non-root user first
+RUN groupadd -g 1001 nodejs && \
+    useradd -u 1001 -g nodejs nestjs
 
 # Install OpenSSL and curl for health checks
 RUN apt-get update && apt-get install -y --no-install-recommends \
@@ -41,17 +43,24 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     curl \
     && rm -rf /var/lib/apt/lists/*
 
+# Create app directory with correct ownership
+RUN mkdir -p /app && chown nestjs:nodejs /app
+WORKDIR /app
+
+# Switch to non-root user before installing dependencies
+USER nestjs
+
 # Install production dependencies + ts-node for seed
-COPY package*.json ./
-COPY tsconfig*.json ./
+COPY --chown=nestjs:nodejs package*.json ./
+COPY --chown=nestjs:nodejs tsconfig*.json ./
 RUN npm ci --only=production && npm install ts-node typescript @types/node --save-dev
 
-# Copy Prisma schema and generate client (dummy DATABASE_URL for build time only)
-COPY prisma ./prisma/
+# Copy Prisma schema and generate client
+COPY --chown=nestjs:nodejs prisma ./prisma/
 RUN DATABASE_URL="postgresql://user:pass@localhost:5432/db" npx prisma generate
 
 # Copy built files
-COPY --from=builder /app/dist ./dist
+COPY --chown=nestjs:nodejs --from=builder /app/dist ./dist
 
 # Create startup script that runs migrations and seed before starting the app
 RUN echo '#!/bin/sh\n\
@@ -63,16 +72,6 @@ npx prisma db seed || echo "Seed completed (or already seeded)"\n\
 echo "Starting application..."\n\
 exec node dist/main.js\n' > /app/start.sh && chmod +x /app/start.sh
 
-# Create non-root user
-RUN groupadd -g 1001 nodejs && \
-    useradd -u 1001 -g nodejs nestjs
-
-# Change ownership of app directory
-RUN chown -R nestjs:nodejs /app
-
-# Switch to non-root user
-USER nestjs
-
 # Expose port
 EXPOSE 3004