# Build stage
FROM node:20-alpine AS builder

WORKDIR /app

# Copy package files
COPY package.json package-lock.json* ./

# Install dependencies
RUN npm install

# Copy source code
COPY . .

# Ensure public directory exists (may not have static assets)
RUN mkdir -p public

# Build the application
RUN npm run build

# Production stage
FROM node:20-alpine AS runner

WORKDIR /app

# Set to production
ENV NODE_ENV=production

# Create non-root user
RUN addgroup -S -g 1001 nodejs
RUN adduser -S -u 1001 -G nodejs 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

# Switch to non-root user
USER nextjs

# Expose port
EXPOSE 3000

# Set hostname
ENV HOSTNAME="0.0.0.0"

# Start the application
CMD ["node", "server.js"]