fix

frontend/vite.config.js

@@ -1,5 +1,5 @@
 import { defineConfig } from 'vite'
-import react from '@vitejs/plugin-react'
+import react from '@vitejs/plugin-react-swc'
 
 // https://vite.dev/config/
 export default defineConfig({
@@ -7,7 +7,7 @@ export default defineConfig({
   server: {
     proxy: {
       '/api': {
-        target: 'http://localhost:8000',
+        target: process.env.VITE_API_TARGET || 'http://localhost:8000',
         changeOrigin: true,
       }
     }