Debian server role: Install the Docker package.

Instead of having the Docker package as part of the general utility
package installation.

Ansible/roles/debian_server/tasks/docker.yml

 ---
+- name: Install Docker
+  ansible.builtin.apt:
+    cache_valid_time: 3600
+    name:
+      - docker.io
+    state: present
+
 - name: Get the Docker package facts
   ansible.builtin.package_facts:
 

Ansible/roles/debian_server/tasks/main.yml

@@ -34,7 +34,6 @@
       - amd64-microcode
       - cryptsetup
       - curl
-      - docker.io
       - git
       - intel-microcode
       - libpam-mount-bin