add daemon file template

defaults/main.yml

@@ -8,3 +8,9 @@ docker_restart_handler_state: restarted
 
 # A list of users who will be added to the docker group.
 docker_users: []
+## yaml docker config convert in json in template
+# exemaple:
+# docker_daemon_config:
+#   dns:
+#     - 172.17.0.1
+docker_daemon_config:

tasks/main.yml

@@ -1,32 +1,49 @@
 - name: Include OS-specific variables.
-  include_vars: "{{ ansible_os_family }}.yml"
+  ansible.builtin.include_vars: "{{ ansible_os_family }}.yml"
 
 - name: Add CentOS repository
-  block:
-  
-  - name: Add Docker repository.
-    get_url:
-      url: "https://download.docker.com/linux/centos/docker-ce.repo"
-      dest: '/etc/yum.repos.d/docker-ce.repo'
-      owner: root
-      group: root
-      mode: 0644
   when: ansible_os_family == "RedHat"
   become: true
+  block:
+    - name: Add Docker repository.
+      ansible.builtin.get_url:
+        url: "https://download.docker.com/linux/centos/docker-ce.repo"
+        dest: '/etc/yum.repos.d/docker-ce.repo'
+        owner: root
+        group: root
+        mode: "0644"
 
 - name: Install Docker.
-  package:
+  ansible.builtin.package:
     name: "{{  docker_package }}"
     state: present
   notify: restart docker
   become: true
 
+- name: Ensure /etc/docker exist
+  ansible.builtin.file:
+    dest: /etc/docker/
+    owner: root
+    group: root
+    mode: "0755"
+    state: directory
+  become: true
+
+- name: Template daemon.json
+  ansible.builtin.template:
+    dest: /etc/docker/daemon.json
+    src: template/daemon.json.j2
+    mode: "0644"
+  notify: restart docker
+  become: true
+
 - name: Ensure Docker is started and enabled at boot.
-  service:
+  ansible.builtin.service:
     name: docker
     state: "{{ docker_service_state }}"
     enabled: "{{ docker_service_enabled }}"
   become: true
 
-- include_tasks: docker-users.yml
+- name: Include Users task
+  ansible.builtin.include_tasks: docker-users.yml
   when: docker_users | length > 0

template/daemon.json.j2

@@ -0,0 +1 @@
+{{ docker_daemon_config|to_json(indent=4) }}