service: only use user as owner if docker_host_user is true

roles/service/tasks/main.yml

@@ -68,8 +68,8 @@
       ansible.builtin.file:
         path: "{{ docker_mounts_dir }}"
         state: directory
-        owner: "{{ user.uid | default(omit) }}"
+        owner: "{{ user.uid if docker_host_user else omit }}"
-        group: "{{ user.group | default(omit) }}"
+        group: "{{ user.group if docker_host_user else omit }}"
         mode: 0700
 
 - name: Database container