fix variables

README.md

@@ -3,6 +3,7 @@
 Install docker engine. Currently only overlay2 as storage engine is supported.
 
 **Supported OS**
+
 * RHEL7
 
 ### Role Variables
@@ -20,12 +21,17 @@ dockerengine_block_registries: []
 # dockerengine_https_proxy: # defaults to not set
 # dockerengine_no_proxy: # defaults to not set
 
-# All storage variables are mandatory. You have to set them correctly!
 # dockerengine_storage_pvs: /dev/sdx # defaults to not set
 dockerengine_storage_vg: vg_docker
 dockerengine_storage_lv: lv_docker
 dockerengine_storage_size: 100G
 dockerengine_base_dir: /var/lib/docker
+
+dockerengine_cli_options:
+  - selinux-enabled
+  - log-driver=journald
+  - signature-verification=false
+
 ```
 
 ### Examples
@@ -35,7 +41,6 @@ dockerengine_base_dir: /var/lib/docker
 ```yaml
 ---
 - hosts: docker-engine
-  become: true
 
   roles:
     - sit-lnx.docker-engine