FROM node:20-alpine

WORKDIR /app

COPY package.json package-lock.json ./
RUN npm ci --omit=dev

COPY src/ ./src/
COPY scripts/ ./scripts/

USER node

EXPOSE 8080

ENV NODE_ENV=production
ENV HTTP_PORT=8080
ENV HTTP_HOST=0.0.0.0

HEALTHCHECK --interval=30s --timeout=10s --retries=3 \
  CMD node -e "require('http').get('http://localhost:8080/health', (r) => {if (r.statusCode !== 200) throw new Error(r.statusCode)})"

CMD ["node", "src/http-server.js"]