update..

roles/common/tasks/apt.yml

@@ -218,6 +218,15 @@
   tags:
     - apt-lxc-hosts-pkgs
 
+- name: (apt.yml) Install docker related packages
+  apt:
+    name: "{{ apt_docker_host_pkgs }}"
+    state: "{{ apt_install_state }}"
+  when: 
+    - groups['docker_host']|string is search(inventory_hostname)
+  tags:
+    - apt-docker-hosts-pkgs
+
 - name: (apt.yml) Install kvm_host related packages
   apt:
     name: "{{ apt_kvm_host_pkgs }}"