Is the docker warm support continuing?

Redhat ent, declared an end to and support from the. Some rocky podman to think? Or will it continue to support docker-swarm?

You would most likely have to use the instructions here: Install Docker Engine on CentOS | Docker Documentation and use Docker repositories as Docker isn’t in RHEL/Rocky repositories.

Providing Docker make packages available for EL8/EL9, then it will still be possible to use Docker.