FROM docker.m.daocloud.io/node:20-alpine

WORKDIR /app

COPY package.json server.mjs ./

ENV NODE_ENV=production
ENV PORT=8787

EXPOSE 8787

HEALTHCHECK --interval=30s --timeout=5s --retries=3 \
  CMD node -e "fetch('http://127.0.0.1:8787/health').then(r=>process.exit(r.ok?0:1)).catch(()=>process.exit(1))"

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