# 多阶段构建 - Next.js 生产镜像

# 阶段1: 依赖安装和构建
FROM node:20-alpine AS builder

WORKDIR /app

# 复制 package 文件
COPY package.json yarn.lock* ./

# 安装依赖
RUN yarn install --frozen-lockfile

# 复制源代码
COPY . .

# 构建应用
RUN yarn build

# 阶段2: 生产运行环境
FROM node:20-alpine AS runner

WORKDIR /app

ENV NODE_ENV=production

# 创建非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
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
# 复制 data 目录（运行时需要的 JSON 数据文件）
COPY --from=builder --chown=nextjs:nodejs /app/data ./data

USER nextjs

EXPOSE 3000

ENV PORT=3000
ENV HOSTNAME="0.0.0.0"

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