# syntax=docker/dockerfile:1

# ── Stage 1: install dependencies ─────────────────────────────────────────────
FROM node:20-alpine AS deps
RUN apk add --no-cache libc6-compat
WORKDIR /app

COPY package.json package-lock.json ./
RUN npm ci

# ── Stage 2: build the app ────────────────────────────────────────────────────
FROM node:20-alpine AS builder
WORKDIR /app

COPY --from=deps /app/node_modules ./node_modules
COPY . .

RUN npm run build

# ── Stage 3: production runner ────────────────────────────────────────────────
FROM node:20-alpine AS runner
WORKDIR /app

ENV NODE_ENV=production
ENV PORT=3000
ENV HOSTNAME="0.0.0.0"

# Run as non-root for security
RUN addgroup --system --gid 1001 nodejs \
 && adduser  --system --uid 1001 nextjs

# Static assets
COPY --from=builder /app/public ./public

# Standalone server + compiled output (standalone mode bundles only what's needed)
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static   ./.next/static

USER nextjs

EXPOSE 3000

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