Question about create Centos container

i am very new in kubenetes, i want to know why when i remove ‘command: ["/bin/sleep", “3650d”]’ the pod wont “Running”?

apiVersion: v1
kind: Pod
name: centos3

  • image: centos:8
    name: centos
    command: ["/bin/sleep", “3650d”]

Containers typically have default commands or entrypoints set. The centos:8 container does a no operation in shell.

$ docker pull centos:8
8: Pulling from library/centos
7a0437f04f83: Already exists 
Digest: sha256:5528e8b1b1719d34604c87e11dcd1c0a20bedf46e83b5632cdeac91b8c04efc1
Status: Downloaded newer image for centos:8

$ docker inspect centos:8 | jq '.[].ContainerConfig.Cmd'
  "#(nop) ",
  "CMD [\"/bin/bash\"]"

$ docker inspect centos:8 | jq '.[].ContainerConfig.Entrypoint'