Updated README

README.md

@@ -43,6 +43,15 @@ docker_users:
 
 A list of system users to be added to the `docker` group (so they can use Docker on the server).
 
+A list of system users to be added to the `docker` group (so they can use Docker on the server).
+
+```yaml
+docker_daemon_options:
+  storage-driver: "overlay2"
+  log-opts:
+    max-size: "100m"
+```
+
 ### Docker networks
 See official documentation for `docker_network` module for more informations.