feat: optimize Docker build with Next.js standalone output configuration

Dockerfile

@@ -18,7 +18,7 @@ ENV NODE_ENV=production
 COPY myfavstuff/package.json myfavstuff/package-lock.json* ./
 
 # Install dependencies including dev dependencies needed for build
-# npm ci should install eslint from devDependencies
+# This will also install eslint if it's in devDependencies and package-lock.json is up to date
 RUN npm ci
 
 # Copy the rest of your app's source code from the 'myfavstuff' subdirectory
@@ -34,21 +34,22 @@ RUN echo "--- Debugging Build Environment Variables (Passed to Build) ---" && \
     NEXT_PUBLIC_SUPABASE_ANON_KEY=$NEXT_PUBLIC_SUPABASE_ANON_KEY \
     npm run build
 
-# Production stage
+# Production stage (runner)
 FROM node:20-alpine AS runner
 WORKDIR /app
 
 ENV NODE_ENV=production
 # Runtime environment variables will be set by Coolify directly in the container environment.
-# We don't need to re-declare ARGs here or pass them from the builder stage for runtime ENV.
-# Coolify injects them into the final container.
 
 # Create a non-root user for security IN THIS STAGE
 RUN addgroup -g 1001 -S nodejs && adduser -S nextjs -u 1001
 
-COPY --from=builder /app/public ./public
-COPY --from=builder --chown=nextjs:nodejs /app/.next ./.next
-# If you decide to use standalone output later, you'd copy /app/.next/standalone and /app/.next/static
+# Copy standalone output from the builder stage
+COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./ 
+# Copy static assets
+COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
+# Copy public assets (if any, like favicon, images in /public)
+COPY --from=builder --chown=nextjs:nodejs /app/public ./public
 
 USER nextjs
 
@@ -57,5 +58,5 @@ EXPOSE 3000
 ENV PORT=3000
 ENV HOSTNAME=0.0.0.0
 
-# The start script in package.json should be `next start`
-CMD ["npm", "start"]
+# Run the Next.js standalone server
+CMD ["node", "server.js"]

myfavstuff/next.config.js

@@ -1,6 +1,6 @@
 /** @type {import('next').NextConfig} */
 const nextConfig = {
-  // output: 'standalone', // Consider this if you want a smaller Docker image, requires Next.js 12.2+
+  output: 'standalone', // Enable standalone output for optimized Docker builds
   
   // Configure images if using them from external domains
   images: {