Docker（2）：使用Dockerfile创建支持SSH服务的镜像

2022-11-22 16:12:33

1、创建工作目录

# mkdir sshd_ubuntu

# ls

在其中，创建Dockerfile和run.sh文件

# cd sshd_ubuntu/

# touch Dockerfile run.sh

# ls

2、编写run.sh脚本和authorized_keys文件

# vi run.sh

写入内容：

#! /bin/bash

/usr/sbin/sshd –D

在宿主主机上生成SSH密钥对，并创建authorized_keys

# ssh-keygen –t rsa

# cat ~/sshd_ubuntu/id_rsa.pub >authorized_keys

# ls

3、编写Dockerfile

#设置继承镜像

FROM ubuntu

#提供一些作者的信息

MAINTAINER from www.dockerpool.com by Aiden

#下面开始运行命令，此处更改Ubuntu的源为国内163的源

RUN echo "deb http://mirrors.163.com/ubuntu/ trusty main restricted universe multiverse" > /etc/apt/sources.list

RUN echo "deb http://mirrors.163.com/ubuntu/ trusty-security main restricted universe multiverse" >> /etc/apt/sources.list

RUN echo "deb http://mirrors.163.com/ubuntu/ trusty-updates main restricted universe multiverse" >> /etc/apt/sources.list

RUN echo "deb http://mirrors.163.com/ubuntu/ trusty-proposed main restricted universe multiverse" >> /etc/apt/sources.list

RUN echo "deb http://mirrors.163.com/ubuntu/ trusty-backports main restricted universe multiverse" >> /etc/apt/sources.list

RUN apt-get update

#安装ssh服务

RUN apt-get install -y openssh-server

RUN mkdir -p /var/run/sshd

RUN mkdir -p /root/.ssh

#取消pam限制

RUN sed -ri 's/session required pam_loginuid.so/#session required pam_loginuid.so/g' /etc/pam.d/sshd

#复制配置文件到相应位置，并赋予脚本可执行权限

ADD authorized_keys /root/.ssh/authorized_keys

ADD run.sh /run.sh

RUN chmod  /run.sh

#开放端口

EXPOSE

#设置自启动命令

CMD ["/run.sh"]