refactor: remove geerlingguy.docker dependency

Assume Docker and Docker Compose are already installed on the target
host. This decouples the role from a specific Docker installation
method; avoiding conflicts with existing setups.

tasks/setup-compose.yaml

@@ -1,8 +1,4 @@
 ---
-- name: Set up Docker and Docker compose
-  ansible.builtin.include_role:
-    name: geerlingguy.docker
-
 - name: Create directory for Gitea Docker Compose stack
   ansible.builtin.file:
     path: "{{ gitea_home_path }}"