docker起不来报错：Failed to start Docker Application Container Engine

[root@master01 ~]# systemctl daemon-reload
[root@master01 ~]# systemctl start docker
Job for docker.service failed because the control process exited with error code. See “systemctl status docker.service” and “journalctl -xe” for details.
[root@master01 ~]# systemctl status docker.service
● docker.service - Docker Application Container Engine
Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor preset: disabled)
Active: failed (Result: start-limit) since Mon 2022-02-21 18:34:44 CST; 2s ago
Docs: https://docs.docker.com
Process: 6716 ExecStart=/usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock (code=exited, status=1/FAILURE)
Main PID: 6716 (code=exited, status=1/FAILURE)

Feb 21 18:34:41 master01 systemd[1]: docker.service failed.
Feb 21 18:34:44 master01 systemd[1]: docker.service holdoff time over, scheduling restart.
Feb 21 18:34:44 master01 systemd[1]: Stopped Docker Application Container Engine.
Feb 21 18:34:44 master01 systemd[1]: start request repeated too quickly for docker.service
Feb 21 18:34:44 master01 systemd[1]: Failed to start Docker Application Container Engine.
Feb 21 18:34:44 master01 systemd[1]: Unit docker.service entered failed state.
Feb 21 18:34:44 master01 systemd[1]: docker.service failed.
Feb 21 18:34:44 master01 systemd[1]: start request repeated too quickly for docker.service
Feb 21 18:34:44 master01 systemd[1]: Failed to start Docker Application Container Engine.
Feb 21 18:34:44 master01 systemd[1]: docker.service failed.

解决方法：
1.防火墙和selinux都关了
2.修改/etc/docker/daemon.json这个文件（就这样粘贴复制，别多逗号）
{
“registry-mirrors”: [“https://docker.mirrors.ustc.edu.cn”]
}
3.systemctl daemon-reload
4.systemctl restart docker
5.systemctl status docker