use generic ssh key

group_vars/all.yml

@@ -1,7 +1,7 @@
 ---
 # generic settings
 ansible_user: ansible
-ansible_ssh_private_key_file: ~/.ssh/ansible_ed25519
+#ansible_ssh_private_key_file: ~/.ssh/ansible_ed25519
 
 main_username: container
 main_groupname: "{{ main_username }}"