Improve error handling when client version not supported, or other API error

Signed-off-by: Grant Millar <rid@cylo.io>

Author: Rid

src/Docker.php

@@ -7,6 +7,8 @@
 use Docker\API\Client;
 use Docker\API\Model\AuthConfig;
 use Docker\Endpoint\ImagePush;
+use Docker\API\Runtime\Client\Client as RuntimeClient;
+use Docker\API\Exception\BadRequestException;
 
 /**
  * Docker\Docker.
@@ -28,6 +30,22 @@ public static function create($httpClient = null, array $additionalPlugins = [],
             $httpClient = DockerClientFactory::createFromEnv();
         }
 
-        return parent::create($httpClient, $additionalPlugins, $additionalNormalizers);
+        $client = parent::create($httpClient, $additionalPlugins, $additionalNormalizers);
+        $testClient = $client->systemInfo(RuntimeClient::FETCH_RESPONSE)->getBody()->getContents();
+        $jsonObj = json_decode($testClient);
+
+        if ($jsonObj !== null) {
+            if (isset($jsonObj->message)) {
+                // Check if the client is too new
+                if (strpos($jsonObj->message, 'client version') !== false && strpos($jsonObj->message, 'is too new') !== false) {
+                    throw new BadRequestException("The client version is not supported by your version of Docker. Message: {$jsonObj->message}");
+                } else {
+                    throw new BadRequestException($jsonObj->message);
+                }
+            }
+        } else {
+            throw new BadRequestException("Failed to decode JSON.");
+        }
+        return $client;
     }
 }