Refactor Docker setup for minimal image and update build scripts; adjust static asset serving in production

vite.config.js

@@ -1,4 +1,4 @@
-import { defineConfig } from 'vite'
+import { defineConfig } from 'vite' 
 import tailwindcss from '@tailwindcss/vite'
 import Icons from 'unplugin-icons/vite'
 
@@ -13,4 +13,16 @@ export default defineConfig({
             },
         })
     ],
+    server: {
+        port: 5173,
+        host: 'localhost',
+        proxy: {
+            // Proxy the backend WebSocket/API on /music to the Bun server
+            '/music': {
+                target: 'http://localhost:3000',
+                changeOrigin: true,
+                ws: true,
+            },
+        },
+    },
 })