# Node.js backend
FROM node:18-alpine

WORKDIR /app

COPY package*.json ./

RUN npm install --omit=dev

COPY . .

EXPOSE 3001

HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
  CMD wget --spider -q http://localhost:3001/api/health

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