Why do you start sshd inside zookeeper container? It is a serious security issue.

[paranoid945]

CMD /usr/sbin/sshd && bash /usr/bin/start-zk.sh

[stigok]

I think this is for docker swarm, however, I'm not really sure. Specify a custom command when running the image instead, to avoid starting sshd. Or, even better, build your own image.

command: ["bash", "/usr/bin/start-zk.sh"]

[timstableford]

Yeeeahhh, super shady. His base image sets up sshd with password-less login on each of his images