FROM centos:7

MAINTAINER Yang <yangyufans@qq.com>

RUN yum install -y passwd openssl openssh-server openssh-clients

RUN ssh-keygen -q -t rsa -b 2048 -f /etc/ssh/ssh_host_rsa_key -N '' && \
    ssh-keygen -q -t ecdsa -f /etc/ssh/ssh_host_ecdsa_key -N '' && \
    ssh-keygen -t dsa -f /etc/ssh/ssh_host_ed25519_key -N ''

RUN sed -i "s/UsePAM.*/UsePAM no/g" /etc/ssh/sshd_config && \
    sed -i "s/UsePrivilegeSeparation.*/UsePrivilegeSeparation no/g" /etc/ssh/sshd_config

RUN echo "123456" | passwd --stdin root

ENTRYPOINT ["/usr/sbin/sshd","-D"]