“ Docker extracted its container runtime out into a new project, containerd. This includes Docker’s functionality for executing containers, handling low-level storage and managing image transfers. Containerd was donated to the Cloud Native Computing Foundation (CNCF) in order to provide the container community with a basis for creating new container solutions.”
from “What Is containerd, And How Does It Relate to Docker and Kubernetes” -https://www.cloudsavvyit.com/10075/what-is-containerd-and-ho...
btw for mac there’s Containerd + Lima https://medium.com/nttlabs/containerd-and-lima-39e0b64d2a59