diff --git a/group_vars/dev_environments.yml.example b/group_vars/dev_environments.yml.example
deleted file mode 100644
index 800dbc992261a3cffb0a92ea0566953f427ad794..0000000000000000000000000000000000000000
--- a/group_vars/dev_environments.yml.example
+++ /dev/null
@@ -1,6 +0,0 @@
-docker:
-  registry_url: gitlab.geant.net:5005/docker/ci_registry
-  username: first.lastname
-  private_token: my-secret-token
-
-nat_user: nat
diff --git a/playbook.yml b/playbook.yml
index 7fb2825fefeb5f8e7e1ff478f784f6fd4e47309b..83daf79e0e27dfe7c79017cba10dc5ac0dca1492 100644
--- a/playbook.yml
+++ b/playbook.yml
@@ -1,6 +1,12 @@
 - name: Install Docker and ContainerLab
-  hosts: dev_environments
+  hosts: all
   become: true
+  vars: 
+    docker:
+      registry_url: gitlab.geant.net:5005/docker/ci_registry
+      username: "{{username }}"
+      private_token: "{{ secret_token}}"
+    nat_user: nat
   roles:
     - docker
     - containerlab