FROM node:22-alpine

WORKDIR /app

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

COPY server.js ./
COPY src ./src
COPY public ./public

# Database, uploads and nightly backups live here; mount a volume in compose.
RUN mkdir -p /app/data
ENV DATA_DIR=/app/data
ENV NODE_ENV=production
ENV PORT=3100

EXPOSE 3100

HEALTHCHECK --interval=30s --timeout=5s --start-period=10s --retries=3 \
  CMD wget -qO- http://127.0.0.1:3100/healthz >/dev/null 2>&1 || exit 1

CMD ["node", "--disable-warning=ExperimentalWarning", "server.js"]