added docker role

roles/docker/meta/main.yml

@@ -0,0 +1,6 @@
+---
+galaxy_info:
+  author: cjr
+  description: Install and enable docker
+  license: BSD-3-Clause
+  min_ansible_version: "2.1"

roles/docker/tasks/main.yml

@@ -0,0 +1,19 @@
+---
+- name: Install docker
+  community.general.pacman:
+    name:
+      - docker
+    state: present
+
+
+- name: Enable docker service
+  ansible.builtin.service:
+    name: docker
+    state: started
+    enabled: true
+
+- name: Add user to docker group
+  ansible.builtin.user:
+    user: "{{ ansible_user_id }}"
+    groups: docker
+    append: true