镜像添加ssh服务

Dockerfile：

FROM centos:centos8

MAINTAINER docker_user (archer2018@docker.com)

ADD CentOS8-Base.repo /etc/yum.repos.d/

RUN yum makecache

RUN yum install -y openssh-server*

RUN ssh-keygen -t rsa -N '' -f /etc/ssh/ssh_host_rsa_key -q
RUN ssh-keygen -t ecdsa -N '' -f /etc/ssh/ssh_host_ecdsa_key -q
RUN ssh-keygen -t ed25519 -N '' -f /etc/ssh/ssh_host_ed25519_key -q

RUN sed -i 's/^AuthorizedKeysFile.*/AuthorizedKeysFile ~/.ssh/authorized_keys/g' /etc/ssh/sshd_config
RUN echo 'RSAAuthentication yes' >> /etc/ssh/sshd_config

ADD id_rsa.pub /root/.ssh/authorized_keys

ADD run.sh /root/

RUN chmod 755 /root/run.sh

EXPOSE 22

CMD ["/root/run.sh"]
 

CentOS8-Base.repo

[extras]
gpgcheck=1
gpgkey=http://mirrors.tencentyun.com/centos/RPM-GPG-KEY-CentOS-8
enabled=1
baseurl=http://mirrors.tencentyun.com/centos/$releasever/extras/$basearch/
name=Qcloud centos extras - $basearch
[os]
gpgcheck=1
gpgkey=http://mirrors.tencentyun.com/centos/RPM-GPG-KEY-CentOS-8
enabled=1
baseurl=http://mirrors.tencentyun.com/centos/$releasever/os/$basearch/
name=Qcloud centos os - $basearch
[updates]
gpgcheck=1
gpgkey=http://mirrors.tencentyun.com/centos/RPM-GPG-KEY-CentOS-8
enabled=1
baseurl=http://mirrors.tencentyun.com/centos/$releasever/updates/$basearch/
name=Qcloud centos updates - $basearch

run.sh

#!/bin/bash

/usr/sbin/sshd -D

注意：公钥文件id_rsa.pub 从home目录复制到Dockerfile目录