Fix array building bug

tasks/jail/start.yml

@@ -1,5 +1,5 @@
 - name: Formatting jail.conf options for {{ vars['jail_' + jail_name + '_newest_id'] }}
-  set_fact:
+  ansible.builtin.set_fact:
     _iter_config_opts: >-
       {{
         jail_default_config_opts | combine(
@@ -9,7 +9,7 @@
     _iter_config_lines: []
 
 - name: Setting hostname for jail
-  set_fact:
+  ansible.builtin.set_fact:
     _iter_config_opts: >-
       {{
         _iter_config_opts| combine(
@@ -17,20 +17,22 @@
         )
       }}
 
-- name: Converting config dict into config lines
-  set_fact:
+- name: extending _iter_config_lines
+  ansible.builtin.set_fact:
     _iter_config_lines: >-
-      {{ _iter_config_lines }} + {{
-        ['%s = %s;'|format(
-          item.key,
-          '"%s"'|format(item.value) if item.value is string else
-            item.value|ternary('"true"', '"false"') if item.value.__class__.__name__ == 'bool' else item.value
-        )]
+      {{ _iter_config_lines | union(
+        ['{key} = {value};'.format(
+          key=item.key,
+          value='"{}"'.format(item.value) if item.value is string else
+            item.value|ternary('"true"', '"false"') if item.value is boolean
+            else item.value
+          )
+        ])
       }}
   with_dict: '{{ _iter_config_opts }}'
 
 - name: Flattening config into one variable
-  set_fact: 
+  ansible.builtin.set_fact: 
     _iter_flattened_config: "{{ _iter_config_lines|sort|join('\n    ') }}"
 
 - name: Writing config block for {{ vars['jail_' + jail_name + '_newest_id'] }} into /etc/jail.conf (IPv4)
@@ -72,4 +74,4 @@
     }}
   when: not jail_THIS_with_ip6
 
-# vim: sw=2
+# vim: sw=2:smarttab