Port from 'docker-py' library to renamed 'docker' library.

Use docker.APIClient as object to interface with.

docker_custodian/docker_autostop.py

@@ -66,7 +66,7 @@ def main():
         stream=sys.stdout)
 
     opts = get_opts()
-    client = docker.Client(version='auto', timeout=opts.timeout)
+    client = docker.APIClient(version='auto', timeout=opts.timeout)
 
     matcher = build_container_matcher(opts.prefix)
     stop_containers(client, opts.max_run_time, matcher, opts.dry_run)

docker_custodian/docker_gc.py

@@ -220,7 +220,7 @@ def main():
         stream=sys.stdout)
 
     args = get_args()
-    client = docker.Client(version='auto', timeout=args.timeout)
+    client = docker.APIClient(version='auto', timeout=args.timeout)
 
     if args.max_container_age:
         cleanup_containers(client, args.max_container_age, args.dry_run)

setup.py

@@ -14,7 +14,7 @@ setup(
     include_package_data=True,
     install_requires=[
         'python-dateutil',
-        'docker-py >= 0.5',
+        'docker',
         'pytimeparse',
     ],
     license="Apache License 2.0",

tests/conftest.py

@@ -48,6 +48,6 @@ def later_time():
 
 @pytest.fixture
 def mock_client():
-    client = mock.create_autospec(docker.Client)
-    client._version = '1.17'
+    client = mock.create_autospec(docker.APIClient)
+    client._version = '1.21'
     return client

tests/docker_gc_test.py

@@ -466,7 +466,7 @@ def test_build_exclude_set_empty():
 
 def test_main(mock_client):
     with mock.patch(
-            'docker_custodian.docker_gc.docker.Client',
+            'docker_custodian.docker_gc.docker.APIClient',
             return_value=mock_client):
 
         with mock.patch(