Add Docker support and update Vite config for container dev

- Add Dockerfile for Node-based Vite dev server setup
- Add empty docker-compose.yml as placeholder
- Set Vite to listen on 0.0.0.0 and strict port 5173 in config

vite.config.ts

@@ -3,5 +3,10 @@ import react from '@vitejs/plugin-react'
 import tailwind from '@tailwindcss/vite'
 
 export default defineConfig({
+  server: {
+    host: '0.0.0.0',  // or 'my.local.dev'
+    port: 5173,
+        strictPort: true
+  },
   plugins: [react(), tailwind()],
 })