$ docker run --runtime=kata-fc -itd --name=kata-fc busybox sh
d78bde26f1d2c5dfc147cbb0489a54cf2e85094735f0f04cdf3ecba4826de8c9
$ pstree|grep -e container -e kata
        |-containerd-+-containerd-shim-+-firecracker---2*[{firecracker}]
        | |-kata-shim---7*[{kata-shim}]
        | | `-10*[{containerd-shim}]
        | `-14*[{containerd}]
$
$ docker exec -it kata-fc sh
/ #
/ # uname -r
5.4.32