Docker uses a separate project called containerd to implement OCI: https://github.com/containerd/containerd https://github.com/containerd/containerd Containerd

Docker uses a separate project called containerd to implement OCI: https://github.com/containerd/containerd https://github.com/containerd/containerd Containerd itself is not at all Docker-specific, you can use it independently for anything that requires transferring and running OCI containers. Because it's bundled with Docker, it's by far the most widely installed OCI implementation, easily in the tens of millions of nodes.