docker hub without docker. krgo is a command line tool to pull and push docker images from/to the docker hub. krgo brings the docker hub content and delivery capabilities to any container engine. docker is really popular and a lot of people and organisations are building docker images. These images are stored and shared on the docker hub. However they are only available to docker users. Metadata apart, a docker image is a linux root file system that can be used with any container engine (LXC, libcontainer nsinit, systemd-nspawn, rocket ...). Using krgo, non docker users would be able to pull and share linux images using the docker hub.