dokku-ansible-deploy/plays/predeploy/lib/volumes.yml

---
- name: Create volume mount directories
  become: true
  file:
    path: "{{ item.src }}"
    state: "{{ item.type }}"
    owner: dokku
    group: dokku
  with_items: "{{ config.volumes }}"
  when:
    - config.volumes
    - item.create | default(false)

- name: Attach volume mounts
  dokku_storage:
    app: "{{ dokku.app }}"
    mounts: "{{ item.src }}:{{ item.dest }}{{ ':' + item.mode | default('') }}"
  with_items: "{{ config.volumes }}"
  when: config.volumes