FROM node:20-alpine AS dependencies

WORKDIR /app

# 原生依赖使用镜像内置 Node headers，避免构建时依赖外部 headers 下载站点。
RUN apk add --no-cache python3 make g++ wget
ENV npm_config_nodedir=/usr/local

COPY package*.json ./
RUN npm ci --omit=dev

FROM node:20-alpine AS runtime

WORKDIR /app

RUN apk add --no-cache libstdc++ wget
COPY --from=dependencies /app/node_modules ./node_modules
COPY . .

RUN mkdir -p /app/data /app/storage

EXPOSE 40001

HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
    CMD wget --spider -q http://localhost:40001/api/health || exit 1

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