FROM node:26-alpine
WORKDIR /app
COPY package*.json ./
RUN npm ci --omit=dev
COPY . .
ENV NODE_ENV=production
ENV DATA_DIR=/app/data
EXPOSE 3000
HEALTHCHECK --interval=30s --timeout=10s --retries=3 \
  CMD wget -q -O - http://localhost:3000/health || exit 1
CMD ["node", "server.js"]