Use ansible_user

roles/docker/tasks/main.yaml

@@ -10,7 +10,7 @@
 
 - name: Create Docker directory
   file:
-    path: "/home/{{ user }}/Docker"
+    path: "/home/{{ ansible_user }}/Docker"
     state: directory
     owner: 1000
     group: 1000
@@ -23,9 +23,9 @@
     path: /var/run/docker.sock
     mode: 0666
 
-- name: Add user to Docker group
+- name: Add ansible_user to Docker group
   user:
-    name: "{{ user }}"
+    name: "{{ ansible_user }}"
     groups: docker
     append: true