# 多阶段构建：Next.js 生产镜像
# 用法：docker build -t edu/teacher-portal:latest -f apps/teacher-portal/Dockerfile .

# ============ Builder ============
FROM node:20-alpine AS builder
WORKDIR /app

# 启用 pnpm
RUN corepack enable && corepack prepare pnpm@9.12.0 --activate

# 先拷依赖清单，利用缓存
COPY package.json pnpm-lock.yaml* pnpm-workspace.yaml* ./
COPY apps/teacher-portal/package.json ./apps/teacher-portal/
# 安装依赖（含 devDependencies，构建需要）
RUN pnpm install --filter @edu/teacher-portal... --frozen-lockfile || pnpm install --filter @edu/teacher-portal...

# 拷源码
COPY apps/teacher-portal ./apps/teacher-portal

# 构建（禁用 telemetry，生产模式）
ENV NEXT_TELEMETRY_DISABLED=1
RUN pnpm --filter @edu/teacher-portal run build

# ============ Runtime ============
FROM node:20-alpine AS runner
WORKDIR /app

ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1
ENV PORT=3000

# 非 root 用户运行
RUN addgroup -g 1001 -S nodejs && adduser -S nextjs -u 1001

# 拷构建产物与必要清单
COPY --from=builder /app/apps/teacher-portal/package.json ./package.json
COPY --from=builder /app/apps/teacher-portal/.next ./.next
COPY --from=builder /app/apps/teacher-portal/public ./public
COPY --from=builder /app/node_modules ./node_modules
COPY --from=builder /app/apps/teacher-portal/next.config.js ./next.config.js

USER nextjs
EXPOSE 3000

# 健康检查
HEALTHCHECK --interval=30s --timeout=5s --start-period=20s --retries=3 \
  CMD wget --quiet --spider http://localhost:3000/ || exit 1

CMD ["node_modules/.bin/next", "start", "-p", "3000"]
