Docker for Desktop (which is what the issue text describes) is not the same thing as rkt so it would not be an apples to apples comparison. You can still install docker with "apt-get" on Linux. https://docs.docker.com/install/linux/docker-ce/ubuntu/ Docker for Desktop is the GUI experience that runs the docker engine in a VM on your machine with some port forwarding magic etc. rkt equivalent would be containerd probably.