Simplify Caddy infrastructure to use file-based configuration instead of complex API registration system

roles/caddy/tasks/main.yml

@@ -35,7 +35,6 @@
 - name: Create caddy user and group
   user:
     name: "{{ caddy_user }}"
-    group: "{{ caddy_group }}"
     home: "{{ caddy_home }}"
     shell: /usr/bin/nologin
     system: yes
@@ -47,10 +46,11 @@
     path: "{{ item }}"
     state: directory
     owner: "{{ caddy_user }}"
-    group: "{{ caddy_group }}"
+    group: "{{ caddy_user }}"
     mode: '0755'
   loop:
     - "{{ caddy_config_dir }}"
+    - "{{ caddy_sites_enabled_dir }}"
     - "{{ caddy_data_dir }}"
     - "{{ caddy_log_dir }}"
     - "{{ caddy_web_root }}"
@@ -61,22 +61,34 @@
     src: index.html.j2
     dest: "{{ caddy_default_site_root }}/index.html"
     owner: "{{ caddy_user }}"
-    group: "{{ caddy_group }}"
+    group: "{{ caddy_user }}"
     mode: '0644'
 
 
 
-- name: Create systemd override directory
+- name: Create systemd service file for custom Caddy installation
+  template:
+    src: caddy.service.j2
+    dest: /usr/lib/systemd/system/caddy.service
+    mode: '0644'
+  when: dns_challenge_needed | bool
+  notify: 
+    - reload systemd
+    - restart caddy
+
+- name: Create systemd override directory (for standard installation)
   file:
     path: /etc/systemd/system/caddy.service.d
     state: directory
     mode: '0755'
+  when: not dns_challenge_needed | bool
 
-- name: Configure Caddy systemd override
+- name: Configure Caddy systemd override (for standard installation)
   template:
     src: systemd-override.conf.j2
     dest: /etc/systemd/system/caddy.service.d/override.conf
     mode: '0644'
+  when: not dns_challenge_needed | bool
   notify: 
     - reload systemd
     - restart caddy
@@ -86,7 +98,7 @@
     src: Caddyfile.j2
     dest: "{{ caddy_config_file }}"
     owner: root
-    group: "{{ caddy_group }}"
+    group: "{{ caddy_user }}"
     mode: '0640'
     backup: yes
   notify: reload caddy