create project

backend/Dockerfile

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+# Stage 1: 依赖安装 + 构建
+FROM node:20-alpine AS builder
+WORKDIR /app
+
+# 先装依赖（缓存最大化）
+COPY package.json pnpm-lock.yaml ./
+RUN corepack enable && pnpm install --frozen-lockfile
+
+# Prisma 客户端生成
+COPY prisma/ ./prisma/
+RUN npx prisma generate
+
+# 复制源码并构建
+COPY . .
+RUN npm run build
+
+# Stage 2: 最小运行时镜像
+FROM node:20-alpine AS runner
+WORKDIR /app
+
+ENV NODE_ENV=production
+ENV NEXT_TELEMETRY_DISABLED=1
+
+# Standalone output 包含所有必要运行时文件
+COPY --from=builder /app/.next/standalone ./
+COPY --from=builder /app/.next/static ./.next/static
+COPY --from=builder /app/public ./public
+COPY --from=builder /app/prisma ./prisma
+COPY --from=builder /app/node_modules/@prisma ./node_modules/@prisma
+COPY --from=builder /app/node_modules/prisma ./node_modules/prisma
+
+EXPOSE 3000
+
+CMD ["node", "server.js"]