1 change docker password

#cat /ect/redhat-relase

#passwd root

If you have error like this

/usr/share/cracklib/pw_dict.pwd: No such file or directory
PWOpen: No such file or directory
solution
yum -y reinstall cracklib-dicts

2 ssh connect to docker

https://github.com/xiongsongsong/docker-study/wiki/ssh%E8%BF%9C%E7%A8%8B%E7%99%BB%E9%99%86%E4%B8%80%E4%B8%AA%E5%AE%B9%E5%99%A8

Install ssh-server

docker issue