Fix for 'cannot unmarshal array into Go value of type string' error about HostConfig Binds (#3496)

lib/ansible/modules/cloud/docker/docker.py

@@ -717,7 +717,7 @@ class DockerManager(object):
                             self.module.fail_json(msg='invalid bind mode ' + parts[2])
                         else:
                             mode = parts[2]
-                    self.binds.append((parts[0], {'bind': parts[1], 'mode': mode}))
+                    self.binds.append("%s:%s:%s" % (parts[0], parts[1], mode))
                 else:
                     self.module.fail_json(msg='volumes support 1 to 3 arguments')
 
@@ -1370,14 +1370,8 @@ class DockerManager(object):
 
             expected_binds = set()
             if self.binds:
-                for host_path, config in self.binds:
+                for bind in self.binds:
-                    if isinstance(config, dict):
+                    expected_binds.add(bind)
-                        container_path = config['bind']
-                        mode = config['mode']
-                    else:
-                        container_path = config
-                        mode = 'rw'
-                    expected_binds.add("{0}:{1}:{2}".format(host_path, container_path, mode))
 
             actual_binds = set()
             for bind in (container['HostConfig']['Binds'] or []):