FROM node:20-alpine AS client-build
WORKDIR /app/client
COPY client/package.json ./
RUN npm install
COPY client/ ./
RUN npm run build

FROM node:20-slim
WORKDIR /app
COPY server/package.json ./server/
RUN cd server && npm install --omit=dev
COPY server/ ./server/
COPY --from=client-build /app/client/dist ./client/dist

WORKDIR /app/server
ENV PORT=8080
EXPOSE 8080
HEALTHCHECK --interval=30s --timeout=3s --start-period=10s \
  CMD node -e "require('http').get('http://localhost:8080/health', r => process.exit(r.statusCode===200?0:1)).on('error', () => process.exit(1))"
CMD ["node", "index.js"]