# 基础阶段：安装依赖和构建应用
FROM node:20-alpine AS base

# 安装 pnpm
RUN corepack enable && corepack prepare pnpm@10.5.2 --activate

# 配置pnpm镜像源
RUN pnpm config set registry https://registry.npmmirror.com

# 安装构建依赖项
RUN apk add --no-cache libc6-compat
WORKDIR /app

# 依赖缓存阶段
FROM base AS deps
COPY package.json pnpm-lock.yaml* ./
RUN pnpm fetch --prod
RUN pnpm install --frozen-lockfile --prod

# 构建阶段
FROM base AS builder
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY . .

# 环境变量设置
ENV NEXT_TELEMETRY_DISABLED 1
ENV NODE_ENV production

# 构建应用
RUN pnpm build

# 生产阶段
FROM node:20-alpine AS runner
WORKDIR /app

# 环境变量设置
ENV NODE_ENV production
ENV NEXT_TELEMETRY_DISABLED 1

# 添加非 root 用户
RUN addgroup --system --gid 1001 nodejs
RUN adduser --system --uid 1001 nextjs

# 复制必要文件
COPY --from=builder /app/public ./public

# 设置适当的权限
RUN mkdir .next
RUN chown -R nextjs:nodejs .next

# 复制构建产物
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static

# 切换到非 root 用户
USER nextjs

# 暴露端口
EXPOSE 3000

# 设置环境变量
ENV PORT 3000
ENV HOSTNAME "0.0.0.0"

# 启动命令
CMD ["node", "server.js"]