Moving docker management to array

roles/docker/tasks/main.yml

@@ -16,12 +16,13 @@
     state: latest
   tags: packages
 
-- name: Add manager user to Docker group
+- name: Add manager users to Docker group
   user:
-    name: "{{ docker_manager_account }}"
+    name: "{{ item }}"
     groups: docker
     append: yes
-  when: docker_manager_enabled
+  when: docker_manager_accounts is defined
+  loop: "{{ docker_manager_accounts }}"
 
 - name: Configure Docker service options
   copy: