# Multi-stage build for optimized production image
FROM node:20-alpine AS deps
WORKDIR /app

# Install dependencies
COPY package.json package-lock.json* ./
RUN npm ci --prefer-offline

# Builder stage
FROM node:20-alpine AS builder
WORKDIR /app

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

# Build arguments
ARG NEXT_PUBLIC_API_URL
ARG BACKEND_URL
ENV NEXT_PUBLIC_API_URL=${NEXT_PUBLIC_API_URL}
ENV BACKEND_URL=${BACKEND_URL}
ENV NODE_OPTIONS="--max-old-space-size=2048"
ENV NEXT_TELEMETRY_DISABLED=1

RUN npm run build

# Production stage
FROM node:20-alpine AS runner
WORKDIR /app

ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1

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

# Copy built assets
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"]