matrix-docker-ansible-deploy/roles/matrix-dendrite/tasks/register_user.yml

---
- name: Fail if playbook called incorrectly
  fail:
    msg: "The `username` variable needs to be provided to this playbook, via --extra-vars"
  when: "username is not defined or username == '<your-username>'"

- name: Fail if playbook called incorrectly
  fail:
    msg: "The `password` variable needs to be provided to this playbook, via --extra-vars"
  when: "password is not defined or password == '<your-password>'"

- name: Ensure matrix-dendrite is started
  service:
    name: matrix-dendrite
    state: started
    daemon_reload: yes
  register: start_result

- name: Wait a while, so that Dendrite can manage to start
  pause:
    seconds: 7
  when: "start_result.changed"

- name: Register user
  command: "{{ matrix_local_bin_path }}/matrix-dendrite-create-account {{ username|quote }} {{ password|quote }}"