From f4f9e6eba6e8acdde302b97ce21c1c1f7956e708 Mon Sep 17 00:00:00 2001
From: Julien Duponchelle <julien@duponchelle.info>
Date: Fri, 19 Feb 2016 17:01:28 +0100
Subject: [PATCH] =?UTF-8?q?Fix=20Docker=20has=20returned=20an=20error:=205?=
 =?UTF-8?q?00=C2=A0b'No=20command=20specified'?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Fix #433
---
 gns3server/modules/docker/docker_vm.py | 6 +++++-
 tests/modules/docker/test_docker_vm.py | 9 +++++++++
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/gns3server/modules/docker/docker_vm.py b/gns3server/modules/docker/docker_vm.py
index 93d16e1b..efe7f631 100644
--- a/gns3server/modules/docker/docker_vm.py
+++ b/gns3server/modules/docker/docker_vm.py
@@ -95,7 +95,11 @@ class DockerVM(BaseVM):
 
     @start_command.setter
     def start_command(self, command):
-        self._start_command = command
+        command = command.strip()
+        if len(command) == 0:
+            self._start_command = None
+        else:
+            self._start_command = command
 
     @property
     def environment(self):
diff --git a/tests/modules/docker/test_docker_vm.py b/tests/modules/docker/test_docker_vm.py
index d7faf9f2..c049e572 100644
--- a/tests/modules/docker/test_docker_vm.py
+++ b/tests/modules/docker/test_docker_vm.py
@@ -60,6 +60,15 @@ def test_json(vm, project):
     }
 
 
+def test_start_command(vm):
+
+    vm.start_command = "hello"
+    assert vm.start_command == "hello"
+    vm.start_command = " "
+    assert vm.start_command is None
+
+
+
 def test_create(loop, project, manager):
 
     response = {