Actualizar docker-compose.yml con sintaxis YAML corregida y puerto 80 para frontend

frontend/src/main.jsx

@@ -1,10 +1,13 @@
 import React from "react";
 import ReactDOM from "react-dom/client";
 import App from "./App";
+import { AuthProvider } from "./lib/auth";
 import "./styles.css";
 
 ReactDOM.createRoot(document.getElementById("root")).render(
   <React.StrictMode>
-    <App />
+    <AuthProvider>
+      <App />
+    </AuthProvider>
   </React.StrictMode>
 );