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

# Copy package files
COPY package*.json ./

# Install dependencies
RUN npm ci

# Copy all files
COPY . .

# Build Next.js app
RUN npm run build

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

ENV NODE_ENV=production
ENV HOSTNAME="0.0.0.0"
ENV PORT=3000

# Create a non-root user
RUN addgroup -g 1001 -S nodejs && \
    adduser -S nextjs -u 1001

# Copy standalone build output with proper ownership
COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
COPY --from=builder --chown=nextjs:nodejs /app/public ./public

USER nextjs

EXPOSE 3000

# Use ENTRYPOINT and CMD for better container control
ENTRYPOINT ["node"]
CMD ["server.js"]