# syntax=docker/dockerfile:1.7

# ---------- deps ----------
FROM node:20-bookworm-slim AS deps
WORKDIR /app
COPY .npmrc ./
COPY package.json package-lock.json* ./
RUN if [ -f package-lock.json ]; then npm ci; else npm install; fi

# ---------- build ----------
FROM node:20-bookworm-slim AS builder
WORKDIR /app
ENV NEXT_TELEMETRY_DISABLED=1
COPY --from=deps /app/node_modules ./node_modules
COPY . .
# Ensure public/ exists even if the repo ships it empty — Next standalone's
# runner stage COPYs it, and Docker errors on a missing source path.
RUN mkdir -p public && npm run build

# ---------- runtime ----------
FROM node:20-bookworm-slim AS runner
WORKDIR /app
ENV NODE_ENV=production \
    NEXT_TELEMETRY_DISABLED=1 \
    PORT=3000 \
    HOSTNAME=0.0.0.0
RUN apt-get update && apt-get install -y --no-install-recommends wget \
  && rm -rf /var/lib/apt/lists/* \
  && groupadd --system --gid 1001 nodejs \
  && useradd  --system --uid 1001 --gid nodejs nextjs

COPY --from=builder /app/public ./public
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static

USER nextjs
EXPOSE 3000
HEALTHCHECK --interval=30s --timeout=5s --start-period=15s --retries=3 \
  CMD wget -qO- http://127.0.0.1:3000/api/health || exit 1

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