Merge branch 'patch-1' of https://github.com/manics/docker-py into manics-patch-1

Signed-off-by: Joffrey F <joffrey@docker.com>

docker/types/services.py

 import six
 
 from .. import errors
-from ..utils import split_command
+from ..utils import format_environment, split_command
 
 
 class TaskTemplate(dict):
@@ -82,7 +82,10 @@ class ContainerSpec(dict):
         self['Args'] = args
 
         if env is not None:
-            self['Env'] = env
+            if isinstance(env, dict):
+                self['Env'] = format_environment(env)
+            else:
+                self['Env'] = env
         if workdir is not None:
             self['Dir'] = workdir
         if user is not None:

docker/utils/__init__.py

@@ -6,6 +6,7 @@ from .utils import (
     create_host_config, parse_bytes, ping_registry, parse_env_file, version_lt,
     version_gte, decode_json_header, split_command, create_ipam_config,
     create_ipam_pool, parse_devices, normalize_links, convert_service_networks,
+    format_environment
 )
 
 from .decorators import check_resource, minimum_version, update_headers

tests/integration/api_service_test.py

@@ -231,3 +231,19 @@ class ServiceTest(BaseAPIIntegrationTest):
             'PublishedPort': 12357, 'TargetPort': 1990, 'Protocol': 'udp'
         } in ports
         assert len(ports) == 3
+
+    def test_create_service_with_env(self):
+        container_spec = docker.types.ContainerSpec(
+            'busybox', ['true'], env={'DOCKER_PY_TEST': 1}
+        )
+        task_tmpl = docker.types.TaskTemplate(
+            container_spec,
+        )
+        name = self.get_service_name()
+        svc_id = self.client.create_service(task_tmpl, name=name)
+        svc_info = self.client.inspect_service(svc_id)
+        assert 'TaskTemplate' in svc_info['Spec']
+        assert 'ContainerSpec' in svc_info['Spec']['TaskTemplate']
+        con_spec = svc_info['Spec']['TaskTemplate']['ContainerSpec']
+        assert 'Env' in con_spec
+        assert con_spec['Env'] == ['DOCKER_PY_TEST=1']