docker-py/docs/volumes.md

Using volumes

Volume declaration is done in two parts. Provide a list of mountpoints to the Client().create_container() method, and declare mappings in the host_config section.

container_id = c.create_container(
    'busybox', 'ls', volumes=['/mnt/vol1', '/mnt/vol2'],
    host_config=docker.utils.create_host_config(binds={
        '/home/user1/': {
            'bind': '/mnt/vol2',
            'mode': 'rw',
        },
        '/var/www': {
            'bind': '/mnt/vol1',
            'mode': 'ro',
        }
    })
)