# 阶段 1：安装依赖
FROM node:22-alpine AS deps
RUN apk add --no-cache libc6-compat
WORKDIR /app
COPY package.json package-lock.json* ./
RUN npm ci

# 阶段 2：构建产物
FROM node:22-alpine AS builder
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY . .
# 禁用 Next.js 遥测，并注入占位环境变量以通过编译
ENV NEXT_TELEMETRY_DISABLED=1
RUN npm run build

# 阶段 3：生产运行环境
FROM node:22-alpine AS runner
WORKDIR /app
ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1

# 安全降权运行
RUN addgroup --system --gid 1001 nodejs
RUN adduser --system --uid 1001 nextjs

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

USER nextjs
EXPOSE 8080
# 确保 Next.js 监听所有网卡并在正确端口启动
ENV PORT=8080
ENV HOSTNAME="0.0.0.0"

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