caddy: Lint and compatcheck

roles/caddy/meta/argument_specs.yaml

@@ -0,0 +1,9 @@
+---
+argument_specs:
+  main:
+    short_description: Installs caddy
+    options:
+      caddy_admin_email:
+        description: Email address used for ssl certs
+        type: str
+        required: true

roles/caddy/tasks/main.yml

@@ -1,7 +1,16 @@
 ---
+- name: Ensure host distribution is supported
+  ansible.builtin.import_role:
+    name: compatcheck
+  vars:
+    compatcheck_supported_distributions:
+      - name: debian
+        version_min: 11
+      - name: ubuntu
+        version_min: 20
 
 - name: Add caddy apt repository
-  ansible.builtin.import_role:
+  ansible.builtin.include_role:
     name: apt_repository
   vars:
     repo_name: caddy-stable
@@ -10,6 +19,9 @@
     repo_suite: any-version
     repo_components:
       - main
+  when: >
+    (ansible_distribution == 'Debian' and ansible_distribution_major_version | int == 11) or
+    (ansible_distribution == 'Ubuntu' and ansible_distribution_major_version | int < 24)
 
 - name: Install caddy
   ansible.builtin.apt:
@@ -31,7 +43,7 @@
     marker: "# {mark} ANSIBLE MANAGED BLOCK general"
     block: |
       {
-        email {{ admin_email }}
+        email {{ caddy_admin_email }}
       }
     validate: 'caddy validate --config %s --adapter caddyfile'
     backup: true