FROM node:20-alpine

WORKDIR /app

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

COPY . .

ENV NODE_ENV=production
EXPOSE 3000

HEALTHCHECK --interval=30s --timeout=5s --start-period=10s --retries=3 \
  CMD wget --no-verbose --tries=1 --spider http://localhost:3000/healthz || exit 1

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