不要求子路由使用路由组参数

Question

Lets say I have the following code:

Route::group(['domain' => '{tenant_domain}.myapp.com', 'middleware' => 'tenant'], function () {
    Route::get('/', function () {
        // send to dashboard/login based on auth
        if (Auth::check()) {
            return redirect()->route('dashboard');
        } else {
            return redirect()->route('login');
        }
    });

    Route::group(['middleware' => 'guest'], function () {
        // login routes
        Route::get('login', 'Auth\LoginController@showLoginForm')->name('login');
        Route::post('login', 'Auth\LoginController@login');

        // password reset routes
        Route::get('password/reset', 'Auth\ForgotPasswordController@showLinkRequestForm')->name('password.request');
        Route::post('password/email', 'Auth\ForgotPasswordController@sendResetLinkEmail')->name('password.email');
        Route::get('password/reset/{token}', 'Auth\ResetPasswordController@showResetForm')->name('password.reset');
        Route::post('password/reset', 'Auth\ResetPasswordController@reset');
    });
});

Now, the tenant middleware utilizes the tenant_domain. However, I want to make it so that none of the subroutes require tenant_domain as a parameter in their controllers.

How do I do this?