CentOS で SSH　できる Dockerfile

Dockerfile

FROM centos:centos6 
RUN yum install -y passwd openssh openssh-server openssh-clients sudo

RUN sed -ri 's/UsePAM yes/UsePAM no/g' /etc/ssh/sshd_config
RUN /etc/init.d/sshd start
RUN /etc/init.d/sshd stop

# setup user
RUN useradd docker
RUN passwd -fu docker
RUN mkdir -p /home/docker/.ssh; chown docker /home/docker/.ssh; chmod 700 /home/docker/.ssh
ADD ./authorized_keys /home/docker/.ssh/
RUN chown docker /home/docker/.ssh/authorized_keys; chmod 600 /home/docker/.ssh/authorized_keys
RUN echo "docker    ALL=(ALL)       NOPASSWD:ALL" >> /etc/sudoers.d/docker

EXPOSE 22