相当于docker images
Params:
#
实例
>>> from docker import Client
>>> c = Client(base_url='tcp://192.168.1.104:2375')
>>> c.images(name='centos')
[{u'Created': 1417557342,
u'Id': u'34943839435dfb2ee646b692eebb06af13823a680ace00c0adc232c437c4f90c',
u'ParentId': u'5b12ef8fd57065237a6833039acc0e7f68e363c15d8abb5cacce7143a1f7de8a',
u'RepoTags': [u'centos:latest'],
u'Size': 224015991,
u'VirtualSize': 224015991}]