Added optional change of docker root dir

defaults/main.yml

@@ -0,0 +1,2 @@
+change_docker_root: false
+docker_root: /home/docker

tasks/main.yml

@@ -43,3 +43,11 @@
     executable: pip3
     name:
       - docker
+
+- name: Change docker root
+  become: yes
+  template:
+    src: templates/daemon.json.j2
+    dest: /etc/docker/daemon.json
+    mode: 0644
+  when: change_docker_root

templates/daemon.json.j2

@@ -0,0 +1,3 @@
+{
+	   "data-root": "{{ docker_root }}"
+}