# ── Stage 1: Abhängigkeiten installieren ─────────────────────────────────────
FROM node:22-alpine AS deps
WORKDIR /app

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

# ── Stage 2: Build ────────────────────────────────────────────────────────────
FROM node:22-alpine AS builder
WORKDIR /app

COPY package.json package-lock.json* ./
RUN npm ci --ignore-scripts

COPY . .

# Standalone-Output aktiviert kleinste Images
ENV NEXT_TELEMETRY_DISABLED=1
RUN npm run build

# ── Stage 3: Produktions-Image ────────────────────────────────────────────────
FROM node:22-alpine AS runner
WORKDIR /app

ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1

# Unprivilegierter User
RUN addgroup --system --gid 1001 nodejs \
 && adduser  --system --uid 1001 nextjs

# Standalone-Bundle + statische Assets kopieren
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static    ./.next/static
COPY --from=builder --chown=nextjs:nodejs /app/public          ./public

USER nextjs

EXPOSE 3000
ENV PORT=3000
ENV HOSTNAME=0.0.0.0

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