# 🚀 优化版 Dockerfile for Next.js with pnpm (目标: <200MB)
# 第一阶段：安装依赖
FROM node:22-alpine AS deps
WORKDIR /app
# 查看 https://github.com/nodejs/docker-node/tree/b4117f9333da4138b03a546ec926ef50a31506c3#nodealpine 以了解为什么可能需要 libc6-compat
RUN apk add --no-cache libc6-compat
COPY package.json pnpm-lock.yaml ./
RUN npm install -g pnpm && pnpm i --frozen-lockfile

# 第二阶段：构建应用
FROM node:22-alpine AS builder
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY . .
# 在构建期间禁用遥测
ENV NEXT_TELEMETRY_DISABLED=1
RUN npm install -g pnpm && pnpm run build

# 第三阶段：生产镜像，复制所有文件并运行 next
FROM node:22-alpine AS runner
WORKDIR /app

ENV NODE_ENV=production
# 在运行时禁用遥测
ENV NEXT_TELEMETRY_DISABLED=1

RUN addgroup --system --gid 1001 nodejs
RUN adduser --system --uid 1001 nextjs

# 复制 public 文件夹
COPY --from=builder /app/public ./public

# 自动利用输出追踪来减小镜像大小
# https://nextjs.org/docs/advanced-features/output-file-tracing
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static

USER nextjs

EXPOSE 3000

ENV PORT=3000
# 设置主机名为 0.0.0.0 以便外部访问
ENV HOSTNAME="0.0.0.0"

CMD ["node", "server.js"]PORT=3000 \
    HOSTNAME="0.0.0.0" \
    NODE_ENV=production

# 启动应用 (standalone模式直接运行server.js)
CMD ["node", "server.js"]