diff --git a/ansible/README.MD b/ansible/README.MD
index f4c27a2..dee765c 100644
--- a/ansible/README.MD
+++ b/ansible/README.MD
@@ -141,4 +141,11 @@ To work properly, this playbook needs the property `ADMIN_SSH_PUBLIC_KEY` and `A
 To start the build, run :
 ```
 ansible-playbook playbooks/blueprint_preparation.yaml 
+```
+
+## Ostree construction
+
+Create the ostree image and add it to the ostree repository with `ref = rhel/9/x86_64/edge-kiosk` by using the following playbook :
+```
+ansible-playbook playbooks/blueprint_preparation.yaml 
 ```
\ No newline at end of file