Do not change OpenVPN key everytime.

roles/role_deploy_temp_openvpn-server/tasks/main.yml

@@ -14,11 +14,18 @@
   changed_when: false
   become: true
 
+- name: Check if key file already exists
+  stat:
+    path: /usr/local/docker-mounted-files/temp-openvpn-server/temp-p2p-shared.key
+  register: temp_p2p_shared_key
+  become: true
+
 - name: Generate temporary P2P shared key
   ansible.builtin.command:
     cmd: "podman run --rm -i {{ private_registry_domain }}/openvpn:176450680a --genkey secret"
   register: openvpn_genkey_result
   become: true
+  when: not temp_p2p_shared_key.stat.exists
 
 - name: Template key file
   ansible.builtin.template:
@@ -33,6 +40,7 @@
     - temp-p2p-shared.key
   vars:
     temp_p2p_shared_key: "{{ openvpn_genkey_result.stdout }}"
+  when: not temp_p2p_shared_key.stat.exists
 
 - name: Create temp-openvpn-server container
   containers.podman.podman_container: