refactor: yml -> yaml

Signed-off-by: Tuan-Dat Tran <tuan-dat.tran@tudattr.dev>

roles/reverse_proxy/tasks/30_custom_caddy.yaml

@@ -0,0 +1,41 @@
+---
+- name: Check current diversion status for {{ reverse_proxy_default_caddy_path }}
+  ansible.builtin.command:
+    cmd: dpkg-divert --list {{ reverse_proxy_default_caddy_path }}
+  register: divert_check_result
+  changed_when: false # This task only checks state
+  failed_when: false # Don't fail if diversion doesn't exist (rc=1)
+  become: true
+
+- name: Divert package manager's caddy binary path
+  ansible.builtin.command:
+    cmd: dpkg-divert --divert {{ reverse_proxy_diverted_caddy_path }} --rename {{ reverse_proxy_default_caddy_path }}
+  # Only run if the diversion isn't already set correctly
+  when: "reverse_proxy_diverted_caddy_path not in divert_check_result.stdout"
+  notify: Restart caddy service # Notify restart if diversion happens
+  become: true
+
+- name: Copy custom Caddy binary to destination path
+  ansible.builtin.copy:
+    src: "{{ reverse_proxy_custom_caddy_source_path }}"
+    dest: "{{ reverse_proxy_custom_caddy_dest_path }}"
+    owner: root
+    group: root
+    mode: "0755"
+    remote_src: true
+  notify: Restart caddy service # Notify restart if binary changes
+  become: true
+
+- name: Install original (diverted) caddy binary alternative
+  ansible.builtin.command:
+    # Use --force if the link /usr/bin/caddy might exist but not be managed by alternatives yet
+    cmd: update-alternatives --install {{ reverse_proxy_alternatives_link }} {{ reverse_proxy_alternatives_name }} {{ reverse_proxy_diverted_caddy_path }} 10
+  changed_when: false # update-alternatives is idempotent but often reports no change via rc
+  become: true
+
+- name: Install custom caddy binary alternative with higher priority
+  ansible.builtin.command:
+    cmd: update-alternatives --install {{ reverse_proxy_alternatives_link }} {{ reverse_proxy_alternatives_name }} {{ reverse_proxy_custom_caddy_dest_path }} 50
+  changed_when: false # update-alternatives is idempotent but often reports no change via rc
+  notify: Restart caddy service
+  become: true