ansible/roles/caddy/tasks/main.yml

---
- name: Install caddy
  apt:
    name: caddy

- name: Create override directory
  file:
    path: /etc/systemd/system/caddy.service.d
    state: directory
    owner: root
    group: root
    mode: u=rwx,g=rx,o=rx

- name: Override caddy.service
  template:
    src: override.conf.j2
    dest: /etc/systemd/system/caddy.service.d/override.conf
    owner: root
    group: root
    mode: u=rw,g=r,o=r
  notify:
    - Reload caddy

- name: Configure caddy
  copy:
    content: "{{ caddy__servers | caddy__of_servers | to_nice_json }}"
    dest: /etc/caddy/caddy.json
    owner: root
    group: root
    mode: u=rw,g=r,o=r
  notify:
    - Reload caddy

- name: Create error directory
  file:
    path: "{{ caddy__error_dir }}"
    state: directory
    owner: root
    group: root
    mode: u=rwx=,g=rx,o=rx

- name: Configure error page
  template:
    src: error.html.j2
    dest: "{{ caddy__error_dir }}/error.html"
    owner: root
    group: root
    mode: u=rw,g=r,o=r

- name: Enable caddy
  systemd:
    daemon_reload: true
    name: caddy.service
    enabled: true
    state: started
...