Add Docker daemon configuration input docker role

roles/docker/README.md

@@ -30,6 +30,7 @@ None.
 | `docker_repo_key` | `str` | `False` | - | URL for the GPG key used to validate the Docker repository. If not specified, the value is taken from the role's default variables. |
 | `docker_packages` | `list` of `str` | `False` | `["docker-ce", "docker-ce-cli", "docker-ce-rootless-extras", "containerd.io", "docker-buildx-plugin"]` | List of Docker packages to install. This allows customization of installed components. |
 | `docker_users` | `list` of `str` | `False` | `[]` | List of usernames that should be added to the `docker` system group. These users will then be able to run Docker commands without `sudo`. |
+| `docker_daemon_config` | `dict` | `False` | `{}` | Configuration options for the Docker daemon. |
 
 # Example Playbook
 

roles/docker/defaults/main.yml

@@ -27,3 +27,5 @@ docker_packages:
 
 # A list of users who will be added to the docker group.
 docker_users: []
+
+docker_daemon_config: {}

roles/docker/meta/argument_specs.yml

@@ -50,3 +50,7 @@ argument_specs:
         type: list
         elements: str
         default: []
+      docker_daemon_config:
+        description: Configuration options for the Docker daemon
+        type: dict
+        default: {}

roles/docker/tasks/main.yml

@@ -43,3 +43,13 @@
   loop_control:
     loop_var: docker_user
   loop: "{{ docker_users }}"
+
+- name: Create /etc/docker/daemon.json from YAML variable
+  when: docker_daemon_config is defined and docker_daemon_config | length > 0
+  ansible.builtin.copy:
+    content: "{{ docker_daemon_config | to_nice_json }}"
+    dest: "/etc/docker/daemon.json"
+    owner: root
+    group: docker
+    mode: '0644'
+  notify: Restart Docker