以下是一段简单的sshd的示例，EXPOSE暴露的端口仅供互联系统使用。
# This is a base comment
FROM centos:latest
MAINTAINER letong <[email protected]>
#yum install Package
RUN yum -y install openssh-server openssh-clients
#set sshd
RUN ssh-keygen -q -N "" -t dsa -f /etc/ssh/ssh_host_dsa_key
RUN ssh-keygen -q -N "" -t rsa -f /etc/ssh/ssh_host_rsa_key
RUN ssh-keygen -t ecdsa -f /etc/ssh/ssh_host_ecdsa_key -N ""
RUN echo 'root:letong1' | chpasswd
#set port
EXPOSE 22
#set ENV
ENV LANG en_US.UTF-8
ENV LC_ALL en_US.UTF-8
#run sshd
CMD ["/usr/sbin/sshd","-D"]