# syntax=docker/dockerfile:1

# ────────────────────────────────────────────────────────────────────────────────
# Stage 1 — deps: install all node_modules
# ────────────────────────────────────────────────────────────────────────────────
FROM node:20-alpine AS deps

RUN apk add --no-cache libc6-compat git

WORKDIR /app

COPY package.json package-lock.json* yarn.lock* pnpm-lock.yaml* ./

RUN \
  if [ -f package-lock.json ]; then npm ci; \
  elif [ -f yarn.lock ]; then yarn --frozen-lockfile; \
  elif [ -f pnpm-lock.yaml ]; then corepack enable pnpm && pnpm install --frozen-lockfile; \
  else echo "No lockfile found." && npm install; \
  fi

# ────────────────────────────────────────────────────────────────────────────────
# Stage 2 — builder: compile Next.js production build
# ────────────────────────────────────────────────────────────────────────────────
FROM node:20-alpine AS builder

WORKDIR /app

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

# Disable Next.js telemetry during build
ENV NEXT_TELEMETRY_DISABLED=1

RUN npm run build

# ────────────────────────────────────────────────────────────────────────────────
# Stage 3 — runner: minimal production image
# ────────────────────────────────────────────────────────────────────────────────
FROM node:20-alpine AS runner

WORKDIR /app

ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1

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

# Copy only what's needed to run
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

ENV PORT=3000
ENV HOSTNAME="0.0.0.0"

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