zxcms/environments/prod/frontend/config/main-local.php

<?php

$config = [
	'components' => [
		'authClientCollection' => [
			'class' => 'yii\authclient\Collection',
			'clients' => [
				'yandex' => [
					'class' => 'yii\authclient\clients\Yandex',
					'clientId' => '',
					'clientSecret' => '',
				],
				'google' => [
					'class' => 'yii\authclient\clients\Google',
					'clientId' => '',
					'clientSecret' => '',
				],
				'facebook' => [
					'class' => 'yii\authclient\clients\Facebook',
					'clientId' => '',
					'clientSecret' => '',
				],
				'vk' => [
					'class' => 'yii\authclient\clients\VKontakte',
					'clientId' => '',
					'clientSecret' => '',
				],
			],
		]
	],
];

return $config;