added use-docker-mirror + fixed syslog server func

playbooks/managed-mailcow/use-docker-mirror.yaml

@@ -0,0 +1,35 @@
+---
+- name: Update Docker Daemon configuration to use Docker Mirror
+  hosts: all
+  become: yes
+  tasks:   
+    - name: Read current Docker daemon.json
+      ansible.builtin.slurp:
+        src: /etc/docker/daemon.json
+      register: current_daemon_json
+
+    - name: Parse current Docker daemon.json
+      set_fact:
+        current_daemon_config: "{{ current_daemon_json['content'] | b64decode | from_json }}"
+
+    - name: Check current registry-mirrors setting
+      set_fact:
+        registry_mirrors_current: "{{ current_daemon_config['registry-mirrors'] | default('not_set') }}"
+
+    - name: Update Docker daemon.json with registry-mirrors configuration if registry-mirrors not set or not equals
+      ansible.builtin.copy:
+        dest: /etc/docker/daemon.json
+        content: "{{ updated_daemon_json | to_nice_json }}"
+      vars:
+        registry_config: {
+            "registry-mirrors": ["https://dim.servercow.com"]
+        }
+        updated_daemon_json: "{{ current_daemon_config | combine(registry_config) }}"
+      when: registry_mirrors_current != 'https://dim.servercow.com' or log is undefined
+      register: daemon_update
+
+    - name: Restart Docker to apply changes
+      ansible.builtin.systemd:
+        name: docker
+        state: restarted
+      when: daemon_update.changed