sample.php

<?php

require_once(__DIR__ . '/vendor/autoload.php');

$config = new OpenAPI\Client\Configuration;
$config->setHost('http://localhost/v1.40');
$apiInstance = new OpenAPI\Client\Api\ContainerApi(
    // If you want use custom http client, pass your client which implements `GuzzleHttp\ClientInterface`.
    // This is optional, `GuzzleHttp\Client` will be used as default.
    new GuzzleHttp\Client([ 
        'curl' => [
            CURLOPT_UNIX_SOCKET_PATH => '/var/run/docker.sock' // If you are on mac ...
        ]
    ]),
    $config,
);
try {
    print_r($apiInstance->containerList(true));
} catch (Exception $e) {
    echo 'Exception when calling ContainerApi->containerArchive: ', $e->getMessage(), PHP_EOL;
}