integration test fix

make the mount point for shared.txt reside in the /tmp/ folder
because if it resides in the lib folder docker sets the owner of the
folder as root inside the container so then when the container exists
the test fails to cleanup and remove the shared.txt file, and breaks git as well.

tests/integration_test.py

@@ -131,7 +131,7 @@ class TestCreateContainer(BaseTestCase):
 class TestCreateContainerWithBinds(BaseTestCase):
     def runTest(self):
         mount_dest = '/mnt'
-        mount_origin = os.getcwd()
+        mount_origin = '/tmp'
 
         filename = 'shared.txt'
         shared_file = os.path.join(mount_origin, filename)