Installed on Fedora Server 31 after running an update and reboot.
sudo dnf install podman
sudo systemctl enable io.podman.service
sudo systemctl start io.podman.service
sudo firewall-cmd --add-port 8081/tcp --add-port 8080/tcp --add-port 8443/tcp --add-port 8880/tcp --add-port 8843/tcp --zone=FedoraServer --permanent
sudo firewall-cmd --reload