Fix healthchecks: install curl in backend and frontend images

frontend/vite.config.js

@@ -0,0 +1,11 @@
+import { defineConfig } from 'vite';
+import react from '@vitejs/plugin-react';
+
+export default defineConfig({
+  plugins: [react()],
+  server: {
+    proxy: {
+      '/api': 'http://localhost:5000',
+    },
+  },
+});