$ 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