Dockerfile

# ============================================
# Stage 1: 基础镜像 + pnpm
# ============================================
FROM node:22-alpine AS base
RUN corepack enable && corepack prepare pnpm@10.10.0 --activate

# ============================================
# Stage 2: 安装依赖
# ============================================
FROM base AS deps
WORKDIR /app

# 复制依赖清单
COPY package.json pnpm-lock.yaml ./

# 安装生产依赖
RUN pnpm install --frozen-lockfile

# ============================================
# Stage 3: 构建应用
# ============================================
FROM base AS builder
WORKDIR /app

# 复制依赖
COPY --from=deps /app/node_modules ./node_modules
COPY . .

# 构建 Next.js (standalone 模式)
RUN pnpm build

# ============================================
# Stage 4: 生产运行时
# ============================================
FROM node:22-alpine AS runner
WORKDIR /app

ENV NODE_ENV=production
ENV HOSTNAME="0.0.0.0"
ENV PORT=3000

# 创建非 root 用户
RUN addgroup --system --gid 1001 nodejs && \
    adduser --system --uid 1001 nextjs

# 复制 standalone 构建产物
COPY --from=builder /app/.next/standalone ./
COPY --from=builder /app/.next/static ./.next/static
COPY --from=builder /app/public ./public

# 设置权限
RUN chown -R nextjs:nodejs /app

USER nextjs

EXPOSE 3000

CMD ["node", "server.js"]