Magento 2 Integration Test DB Connect

install-config-mysql.php

<?php
return [
    'db-host' => '172.21.0.1',
    'db-user' => 'root',
    'db-password' => 'root',
    'db-name' => 'magento_integration_tests',
    'db-prefix' => '',
    'backend-frontname' => 'backend',
    'admin-user' => \Magento\TestFramework\Bootstrap::ADMIN_NAME,
    'admin-password' => \Magento\TestFramework\Bootstrap::ADMIN_PASSWORD,
    'admin-email' => \Magento\TestFramework\Bootstrap::ADMIN_EMAIL,
    'admin-firstname' => \Magento\TestFramework\Bootstrap::ADMIN_FIRSTNAME,
    'admin-lastname' => \Magento\TestFramework\Bootstrap::ADMIN_LASTNAME,
];