# syntax=docker.io/docker/dockerfile:1

# Base stage for Node.js
FROM node:20-alpine AS base

# Stage 1: Install dependencies
FROM base AS deps
# Add libc6-compat for compatibility with some Node.js native modules
RUN apk add --no-cache libc6-compat
WORKDIR /app

# Copy dependency files
COPY package.json pnpm-lock.yaml* ./

# Install pnpm and dependencies
RUN corepack enable pnpm && pnpm install --frozen-lockfile

# Stage 2: Build the Next.js app
FROM base AS builder
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY . .

# Create a cache directory for Next.js
RUN mkdir -p /app/.next/cache

# Disable telemetry during build
ENV NEXT_TELEMETRY_DISABLED=1

# Build the Next.js app
RUN corepack enable pnpm && pnpm run build

# Stage 3: Production image
FROM base AS runner
WORKDIR /app

ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1

# Create a non-root user
RUN addgroup --system --gid 1001 nodejs
RUN adduser --system --uid 1001 nextjs

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

# Copy standalone output and static files
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static

# Copy the .next/cache for runtime caching (e.g., ISR)
COPY --from=builder --chown=nextjs:nodejs /app/.next/cache ./.next/cache

USER nextjs

EXPOSE 3000

ENV PORT=3000
ENV HOSTNAME="0.0.0.0"

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