Building on top of base image with entrypoint

[citypilgrim]

Hi,
Thank you for this awesome tool. I'm loving the ease of use.

Just one request, when trying to build an image on top of a base image that already has an entrypoint (e.g. fortify). The build fails because when podman tries to run the container, it enters the entrypoint and is not able to run the ansible playbook tasks.

Perhaps we should have a top level key "podman_from_extra_args" that allows us to pass in "--entrypoint /bin/bash", to escape the entrypoint.