Added validation for volumes parameter - Issue #276

Author: yograterol

docker/client.py

@@ -500,6 +500,9 @@ def create_container(self, image, command=None, hostname=None, user=None,
                          cpu_shares=None, working_dir=None, domainname=None,
                          memswap_limit=0):
 
+        if isinstance(volumes, (str, unicode)):
+            volumes = [volumes, ]
+
         config = self._container_config(
             image, command, hostname, user, detach, stdin_open, tty, mem_limit,
             ports, environment, dns, volumes, volumes_from, network_disabled,