Restart Docker after changing the socket group.

Ansible/roles/debian_server/handlers/main.yml

@@ -15,3 +15,8 @@
   service:
     name: ssh
     state: restarted
+
+- name: Restart Docker
+  service:
+    name: docker
+    state: restarted

Ansible/roles/debian_server/tasks/docker.yml

@@ -47,6 +47,7 @@
     mode: 0o0644
   notify:
     - Systemd daemon reload
+    - Restart Docker
 
 - name: Allow default Docker network access to local services
   community.general.ufw: