FROM ubuntu MAINTAINER ggzone xxx@live.com ENV REFRESHED_AT 2015-10-21 RUN apt-get -qqy update && apt-get install -qqy openssh-server ADD id_rsa.pub /root/.ssh/authorized_keys RUN chmod 700 /root/.ssh/authorized_keys RUN apt-get autoclean && apt-get autoremove && rm -rf /var/lib/apt/lists/* RUN mkdir -p /var/run/sshd EXPOSE 22 CMD /usr/sbin/sshd -D将Dockerfile和id_rsa.pub放在同一目录,使用docker build 构建