Add note about not use docker on CentOS8
Current docker-ce is not supported in CentOS8.
So we should add note which explain devstack for using kubernetes
does not work on CentOS8.
@@ -82,6 +82,11 @@ The first step of installing tacker is to clone Devstack and prepare your
:language: ini
:emphasize-lines: 60-65
+ .. note::
+
+ The above local.conf.kubernetes does not work on CentOS8.
+ Because docker-ce is not supported on CentOS8.
+
#. Standalone mode
The ``local.conf`` file of standalone mode from [#f4]_ is shown as below.
