CoreOS creating an Ubuntu base image with a key login

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Download the official image

[Email protected] ~ $ docker Pull Ubuntu:14.04#假设官方下载较慢, the standard image can be downloaded to www.dockerpool.com[Email protected] ~ $ docker Pull dl.dockerpool.com: the/ubuntu:14.04[Email protected] ~ $ docker Tag dl.dockerpool.com: the/ubuntu:14.04Ubuntu:14.04[Email protected] ~ $ docker imagesrepository TAG IMAGE ID CREATED VIRTUAL SIZEdl.dockerpool.com: the/ubuntu14.04               1357F421be383Days ago192.7Mbubuntu14.04               1357F421be383Days ago192.7MB

Create a Dockerfile directory

[email protected] ~ $ mkdir base[email protected] ~ $ cd base[email protected] ~/base $~ $ ssh-keygen#生成訪问密钥[email protected] ~/base $ cat ~/.ssh/id_rsa.pub >authorized_keys

Dockerfile content:

#设置母镜像FROM ubuntu:14.04# provides information for some authors maintainer [email protected] #以下開始执行命令, here to change the source of Ubuntu for domestic 163 source run echo "Deb http ://mirrors.163.com/ubuntu/trusty main restricted Universe Multiverse ">/etc/apt/sources.listrun echo" deb/HTTP Mirrors.163.com/ubuntu/trusty-security main restricted universe multiverse ">>/etc/apt/sources.listrun echo" Deb Http://mirrors.163.com/ubuntu/trusty-updates main restricted universe multiverse ">>/etc/apt/ Sources.listrun echo "Deb http://mirrors.163.com/ubuntu/trusty-proposed main restricted universe multiverse" >>/ Etc/apt/sources.listrun echo "Deb Http://mirrors.163.com/ubuntu/trusty-backports main restricted universe multiverse" >>/etc/apt/sources.listrun apt-get updaterun apt-get upgrade-y# install ssh and supervisorrun apt-get install-y openssh-se RVer supervisorrun mkdir-p/var/run/sshdrun mkdir-p/var/log/supervisorrun mkdir-p/root/.ssh# cancel Pam limit run Sed-ri ' s/se Ssion required pam_loginuid.so/#session required PAm_loginuid.so/g '/etc/pam.d/sshd# Copy the configuration file to the corresponding location copy supervisord.conf/etc/supervisor/conf.d/supervisord.confcopy authorized_keys/root/.ssh/authorized_keys# Open port Expose 22CMD ["/usr/bin/supervisord"]

To create a supervisor.conf file:

[email protected] ~/base $ vi supervisord.conf#文件内容例如以下[supervisord]nodaemon=true[program:sshd]command=/usr/sbin/sshd -D

Verify the contents of the catalog

[email protected] ~/base $ lsDockerfile authorized_keys supervisord.conf[email protected] ~/base $ pwd/home/core/base

Create an image method

[email protected] ~/base $ docker build -t base/163 .

Start Container command

[email protected] ~/base $ docker run -p 100:22 -d base/163

Using a key to log in to a container

[email protected] ~/base $ ssh [email protected]127.0 . 0.1 -P 100  

CoreOS Create an Ubuntu base image using a key login