FROM node:22-slim AS build
RUN corepack enable
WORKDIR /app
# pnpm-workspace.yaml 必须在 install 前就位：它携带 minimumReleaseAgeExclude（豁免新发布包的
# 供应链策略）、onlyBuiltDependencies/allowBuilds（构建脚本白名单）。缺它则容器内 install 看不到
# 这些策略，会误拒近期发布的依赖（如 @xyflow/*）而失败——与宿主行为不一致。
COPY package.json pnpm-lock.yaml* pnpm-workspace.yaml ./
RUN pnpm install --frozen-lockfile || pnpm install
COPY . .
# NEXT_PUBLIC_* 在 Next 构建期内联进浏览器 bundle——必须在 `pnpm build` 前用 build ARG 注入。
# 默认 http://localhost:8000 供 dev；生产经 compose build args 传公网 API 基址。
ARG NEXT_PUBLIC_API_BASE=http://localhost:8000
ENV NEXT_PUBLIC_API_BASE=$NEXT_PUBLIC_API_BASE
RUN pnpm build

FROM node:22-slim AS run
WORKDIR /app
COPY --from=build /app/.next/standalone ./
COPY --from=build /app/.next/static ./.next/static
COPY --from=build /app/public ./public
EXPOSE 3000
# 存活探测：node 打首页（run 阶段无 curl）；5xx/连接失败退出非零。
HEALTHCHECK --interval=30s --timeout=5s --start-period=20s --retries=3 \
  CMD ["node", "-e", "require('http').get('http://127.0.0.1:3000/',r=>process.exit(r.statusCode<500?0:1)).on('error',()=>process.exit(1))"]
CMD ["node", "server.js"]