# ── Stage 1: Install dependencies ────────────────────────────────────────────
FROM node:24-alpine AS deps
WORKDIR /app
COPY package.json package-lock.json ./
RUN npm ci

# ── Stage 2: Build ────────────────────────────────────────────────────────────
FROM node:24-alpine AS builder
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY . .
ENV NEXT_TELEMETRY_DISABLED=1
# Dummy build-time values — real values injected at runtime via Railway env vars
ENV NEXT_PUBLIC_APP_URL=https://flockoff.app
RUN npm run build

# ── Stage 3: Production runner ────────────────────────────────────────────────
FROM node:24-alpine AS runner
WORKDIR /app
ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1

# Non-root user for security
RUN addgroup --system --gid 1001 nodejs
RUN adduser --system --uid 1001 nextjs

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

# Standalone server + compiled output
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static

USER nextjs

# Railway injects PORT at runtime — don't hardcode it here
# EXPOSE is informational only; Railway routes to whatever PORT the app listens on
EXPOSE 3000
ENV HOSTNAME=0.0.0.0

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