tripleo-heat-templates/environments/podman.yaml

# Environment that enables Podman.
resource_registry:
  OS::TripleO::Services::Docker: OS::Heat::None
  OS::TripleO::Services::Podman: ../deployment/podman/podman-baremetal-ansible.yaml

parameter_defaults:
  MistralDockerGroup: false
  ContainerCli: podman