Update vfc install guide docs

Add docker service install guide

Change-Id: I94c9ec73389ed69db0eb291c4d7b7202f73a5839
Issue-Id: VFC-526
Signed-off-by: fujinhua <fu.jinhua@zte.com.cn>

diff --git a/docs/installation.rst b/docs/installation.rst
index 8191c54..c72c77a 100644 (file)
--- a/docs/installation.rst
+++ b/docs/installation.rst
@@ -8,7 +8,15 @@ Describe the environment and steps to install VF-C components.
 
 Environment
 +++++++++++
-VF-C components can run as docker, docker server should be installed before install VF-C components.
+VF-C components can run as docker, docker service should be installed before install VF-C components.
+
+The following scripts show the docker service install commands in centos7.
+
+::
+
+  yum install docker
+  systemctl enable docker.service
+  systemctl start docker.service
 
 Steps
 +++++