Wrapped in block to avoid multiple similar when conditions

roles/docker-core/tasks/main.yml

@@ -1,31 +1,27 @@
 ---
-
-- name: docker & docker compose install
+- block:
+  - name: docker & docker compose install
     pacman:
       name: ['docker','docker-compose']
       state: present
     notify: docker restart
-  when: run_once_docker is not defined
 
-- name: "create {{path_docker_compose_instances}}"
+  - name: "create {{path_docker_compose_instances}}"
     file:
       path: "{{path_docker_compose_instances}}"
       state: directory
       mode: 0700
       owner: administrator
       group: administrator
-  when: run_once_docker is not defined
 
-- name: Set docker_enabled to true, to activate svc-opt-ssd-hdd 
+  - name: Set docker_enabled to true, to activate svc-opt-ssd-hdd
     set_fact:
       docker_enabled: true
-  when: run_once_docker is not defined
 
-- name: flush docker service
+  - name: flush docker service
     meta: flush_handlers
-  when: run_once_docker is not defined
 
-- name: run the docker tasks once
+  - name: run the docker tasks once
     set_fact:
       run_once_docker: true
   when: run_once_docker is not defined