# Optimized Dockerfile for Next.js on Coolify

# Receive build arguments passed by Coolify for the builder stage
ARG NEXT_PUBLIC_SUPABASE_URL
ARG NEXT_PUBLIC_SUPABASE_ANON_KEY

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

# Install dependencies only when needed (better layer caching)
COPY myfavstuff/package.json myfavstuff/package-lock.json* ./

# Install dependencies using frozen lockfile for consistent builds
# Use clean-install for production dependencies only
RUN npm ci --only=production

# Rebuild the source code only when needed
FROM node:20-alpine AS builder
WORKDIR /app

# These ARGs are available to RUN commands in this stage
ARG NEXT_PUBLIC_SUPABASE_URL
ARG NEXT_PUBLIC_SUPABASE_ANON_KEY

ENV NODE_ENV=production

# Copy dependencies from deps stage
COPY --from=deps /app/node_modules ./node_modules
COPY myfavstuff/package.json ./package.json

# Copy source files
COPY myfavstuff/. .

# Set Next.js build memory limit to avoid OOM issues
ENV NODE_OPTIONS="--max_old_space_size=2048"

# Run the build with environment variables
RUN NEXT_PUBLIC_SUPABASE_URL=$NEXT_PUBLIC_SUPABASE_URL \
    NEXT_PUBLIC_SUPABASE_ANON_KEY=$NEXT_PUBLIC_SUPABASE_ANON_KEY \
    npm run build

# Production stage (runner) - using smaller base image for runtime
FROM node:20-alpine AS runner
WORKDIR /app

# Use production node environment
ENV NODE_ENV=production
# Runtime environment variables will be set by Coolify directly in the container environment

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

# Set working directory ownership
RUN chown -R nextjs:nodejs /app

# Optimize production image size by only copying what's needed
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

# Switch to non-root user for better security
USER nextjs

# Expose the running port
EXPOSE 3000

# Set server runtime environment
ENV PORT=3000
ENV HOSTNAME=0.0.0.0

# Optimize for containerized environment
ENV NODE_OPTIONS="--enable-source-maps --max-http-header-size=16384"

# Use exec form for CMD to properly handle signals
CMD ["node", "server.js"]