Ansible and ephemeral docker containers

I would like to use Ansible to manage ephemeral docker containers as SSH servers with password-challenge for testing purposes.

All containers are spawn from a single image, so they have the same SSH password.
Is it possible to disable key authentication and use a single password for all destinations?

$ ansible -m ping all --ask-pass --su-user -vvvv

In ansible.cfg you can
[defaults]
host_key_checking= False

as env var: ANSIBLE_HOST_KEY_CHECKING=0

or you can bypass sshpass by using paramiko as your transport `-c
paramiko` in the command line (also settable in ansible.cfg and env)