system task does not check if docker group exists

the following should be added before task "Create docker directory"

- name: Ensure group "docker" exists
group:
name: docker
state: present

Locate the Ansible task named "Create docker directory" and read the surrounding system setup. Add the requested group-existence step immediately before it, then run the repository's available Ansible checks or playbook. Done means the docker group is ensured before the directory task runs.

Written by the indexing model from the issue text.