fix(playbook): ansible-lint issues

- prefix functions with ansible.builtin
- missing mode for file and copy functions
- boolean values use true|false values and no other (yes,no,...)

Signed-off-by: Vojtěch Mareš <vojtech@mares.cz>

playbook.yml

@@ -8,43 +8,47 @@
         state: present
 
     - name: Ensure user "caddy" exists
-      user:
+      ansible.builtin.user:
         name: caddy
-        system: yes
+        system: true
         shell: /usr/sbin/nologin
         home: /var/lib/caddy
-        create_home: yes
+        create_home: true
         group: caddy
 
     - name: Ensure directory "/etc/caddy" exists
-      file:
+      ansible.builtin.file:
         path: /etc/caddy
         state: directory
+        mode: "0644"
 
     - name: Ensure file "/etc/caddy/Caddyfile" exists
-      file:
+      ansible.builtin.file:
         path: /etc/caddy/Caddyfile
         state: touch
+        mode: "0644"
 
     - name: Ensure file "/etc/caddy/.env" exists"
-      file:
+      ansible.builtin.file:
         path: /etc/caddy/.env
         state: touch
+        mode: "0600"
 
     - name: Copy Caddy binary
-      copy:
+      ansible.builtin.copy:
         src: caddy
         dest: /usr/bin/caddy
         mode: "0755"
 
     - name: Check if systemd unit file exists
-      stat:
+      ansible.builtin.stat:
         path: /etc/systemd/system/caddy.service
       register: systemd_unit_file
 
     - name: Create systemd unit file for Caddy
-      copy:
+      ansible.builtin.copy:
         dest: /etc/systemd/system/caddy.service
+        mode: "0644"
         content: |
           # caddy.service
           # See: https://github.com/caddyserver/dist/blob/master/init/caddy.service
@@ -71,12 +75,12 @@
       when: not systemd_unit_file.stat.exists
 
     - name: Enable and start Caddy service
-      systemd:
+      ansible.builtin.systemd:
         name: caddy
-        enabled: yes
+        enabled: true
         state: started
 
     - name: Restart Caddy service
-      systemd:
+      ansible.builtin.systemd:
         name: caddy
         state: reloaded