perf: optimize portfolio runtime delivery

Replace the blocking asset loader with progressive rendering, defer expensive media and Three.js work, and reduce hydration and animation costs. Move deployment from a static Nginx export to the standalone Next.js runtime with optimized dynamic images.

Dockerfile

@@ -8,14 +8,25 @@ RUN npm ci
 COPY . .
 RUN npm run build
 
-FROM nginx:alpine AS runtime
+FROM node:22-alpine AS runtime
 
-COPY nginx.conf /etc/nginx/conf.d/default.conf
-COPY --from=builder /app/out/ /usr/share/nginx/html/
+WORKDIR /app
+ENV NODE_ENV=production \
+    HOSTNAME=0.0.0.0 \
+    PORT=3000
 
-EXPOSE 80
+RUN addgroup --system --gid 1001 nodejs \
+  && adduser --system --uid 1001 nextjs
 
-HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
-  CMD wget --no-verbose --tries=1 --spider http://127.0.0.1/ || exit 1
+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
+RUN mkdir -p .next/cache && chown -R nextjs:nodejs .next/cache
 
-CMD ["nginx", "-g", "daemon off;"]
+USER nextjs
+EXPOSE 3000
+
+HEALTHCHECK --interval=30s --timeout=3s --start-period=10s --retries=3 \
+  CMD wget --no-verbose --tries=1 --spider http://127.0.0.1:3000/ || exit 1
+
+CMD ["node", "server.js"]