[Docker] container가 안 꺼질 때

sudo docker stop, kill 등으로 docker container를 kill할 때
Error response from daemon: Cannot kill container: ad5e20416118: tried to kill container, but did not receive an exit event
이런 오류가 발생했다.

해결방법:
1. sudo ps awx | grep containerd-shim | grep {container id} | awk '{print $1}'
-> containerd-shim process id를 알아낸 후
2. sudo kill -9 {process id 입력}

끝!