added new zabbix role

roles/monitoring/tasks/configure-docker.yml

@@ -0,0 +1,47 @@
+---
+- name: Gather Docker group entries
+  ansible.builtin.getent:
+    database: group
+    key: "{{ monitoring_zabbix_docker_group }}"
+  failed_when: false
+
+- name: Check whether Docker socket exists
+  ansible.builtin.stat:
+    path: "{{ monitoring_zabbix_docker_socket_path }}"
+  register: monitoring_docker_socket
+
+- name: Ensure Zabbix agent can access Docker socket
+  ansible.builtin.user:
+    name: "{{ monitoring_zabbix_agent_user }}"
+    groups: "{{ monitoring_zabbix_docker_group }}"
+    append: yes
+  when:
+    - monitoring_docker_socket.stat.exists
+    - monitoring_zabbix_docker_group in (ansible_facts.getent_group | default({}))
+  notify: Restart Zabbix Agent
+
+- name: Ensure Docker plugin configuration directory exists
+  ansible.builtin.file:
+    path: "{{ monitoring_zabbix_docker_plugin_config_file | dirname }}"
+    state: directory
+    owner: root
+    group: root
+    mode: '0755'
+  when: monitoring_docker_socket.stat.exists
+
+- name: Configure Docker plugin endpoint
+  ansible.builtin.template:
+    src: docker.conf.j2
+    dest: "{{ monitoring_zabbix_docker_plugin_config_file }}"
+    owner: root
+    group: root
+    mode: '0644'
+  when: monitoring_docker_socket.stat.exists
+  notify: Restart Zabbix Agent
+
+- name: Remove Docker plugin configuration when Docker socket is absent
+  ansible.builtin.file:
+    path: "{{ monitoring_zabbix_docker_plugin_config_file }}"
+    state: absent
+  when: not monitoring_docker_socket.stat.exists
+  notify: Restart Zabbix Agent