Dockerfile.prod

# =============================================================================
# PRODUCTION DOCKERFILE - OPTIMIZED
# Utilise le mode standalone de Next.js (pas besoin de node_modules)
# =============================================================================

# -----------------------------------------------------------------------------
# Stage 1: Builder (deps + build dans le même stage pour éviter copie lente)
# -----------------------------------------------------------------------------
FROM node:24.15.0-alpine AS builder

WORKDIR /app

# Copy dependency files first (pour le cache Docker)
COPY package*.json ./

# Génère un package-lock dans l'image (si absent) puis installe les deps
RUN npm install --package-lock-only && npm ci

# Copy source files
COPY . .

# Set production environment for build
ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1
ENV NEXT_CONFIG_FILE=./next.config.prod.js

# Build the application (generates .next/standalone)
RUN npx next build --webpack

# -----------------------------------------------------------------------------
# Stage 3: Production Runner (MINIMAL)
# -----------------------------------------------------------------------------
FROM node:24.15.0-alpine AS runner

WORKDIR /app

# Production environment
ENV NODE_ENV=production
ENV NEXT_TELEMETRY_DISABLED=1
ENV PORT=3000
ENV HOSTNAME="0.0.0.0"

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

# Copy standalone build (includes node_modules nécessaires)
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./

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

USER nextjs

EXPOSE 3000

# Standalone mode uses server.js directly (faster startup)
CMD ["node", "server.js"]