Fix: Upgrade runtime to Node 22 Alpine LTS

Dockerfile

@@ -12,7 +12,7 @@ COPY . .
 RUN bun run build
 
 # Stage 3: Stable production runtime using Node.js
-FROM node:18-alpine AS runner
+FROM node:22-alpine AS runner
 WORKDIR /app
 
 ENV NODE_ENV=production
@@ -33,4 +33,3 @@ EXPOSE 3004
 
 # Run the Next.js server stably with Node
 CMD ["node", "server.js"]
-