Dockerfile书写介绍及构建ssh镜像tomcat镜像

 

 

 

 

 ===================================================================================================

创建sshd目录

[root@localhost sshd]# docker images
REPOSITORY              TAG                IMAG ID                     CREATED                         SIZE
centos                              2                    e06c81931dd5        15 minutes ago                  589MB

[root@localhost ~]# mkdir sshd
[root@localhost ~]# cd sshd/
[root@localhost sshd]# vim run.sh

#!/bin/bash
/usr/sbin/sshd -D

创建密钥对

[root@localhost sshd]# ssh-keygen 

[root@localhost sshd]# cat ~/.ssh/id_rsa.pub > ./authorized_keys
[root@localhost sshd]# ls
authorized_keys         run.sh

[root@localhost sshd]# cp /etc/pam.d/sshd ./                  #将sshd文件移到当前目录便于查找

[root@localhost sshd]# vim sshd

#session required pam_loginuid.so             #注释这条

编写Dockfile

[root@localhost sshd]# vim Dockerfile

ROM centos:2
MAINTAINER from crushlinux
RUN mkdir -p /var/run/sshd
RUN mkdir -p /root/.ssh
ADD sshd /etc/pam.d/sshd
RUN ssh-keygen -t rsa -f /etc/ssh/ssh_host_rsa_key
RUN ssh-keygen -t dsa -f /etc/ssh/ssh_host_dsa_key
ADD authorized_keys /root/.ssh/authorized_keys
ADD run.sh /run.sh
RUN chmod 775 /run.sh
EXPOSE 22
CMD ["/run.sh"]

构建:

[root@localhost sshd]# docker build -t sshd:1 .

Sending build context to Docker daemon 5.632kB
Step 1/12 : FROM centos:2
---> e06c81931dd5
Step 2/12 : MAINTAINER from crushlinux
---> [Warning] IPv4 forwarding is disabled. Networking will not work.
---> Running in 6e769288fa3f
---

此处省略

--------
Successfully built 86902c3345cf
Successfully tagged sshd:1
有两个
Successfully表示构建成功


如果构建报错检查Dockerfile文件和centos(589M)是否有问题
 

[root@localhost sshd]# docker images               #此时多了一个sshd的镜像
REPOSITORY           TAG                            IMAGE ID                CREATED                   SIZE
sshd                            1                                  86902c3345cf        14 minutes ago           589MB
centos                         2                                   e06c81931dd5       15 minutes ago          589MB

做端口映射:

[root@localhost docker]# docker run -p 2222:22 -itd sshd:1 /bin/bash                      #这里我做映射因为22端口被占用了
26a9e42b2aa72e5bdc1879cb44c74d5948e3b3067d349d8f4d549e1d2a978836
[root@localhost docker]# docker ps -a
CONTAINER ID       IMAGE         COMMAND          CREATED              STATUS                 PORTS                         NAMES
26a9e42b2aa7        sshd:1           "/bin/bash"           6 seconds ago         Up 4 seconds       0.0.0.0:2222->22/tcp      quizzical_cray

查看sshd服务是否开启

[root@localhost docker]# netstat -lnpt | grep 2222
tcp6 0 0 :::2222 :::* LISTEN 34096/docker-proxy

通过ssh连接2222端口

[root@localhost sshd]# ssh 192.168.200.100 -p 2222
The authenticity of host '[192.168.200.100]:2222 ([192.168.200.100]:2222)' can't be established.
RSA key fingerprint is SHA256:3wIiRcP5B1vB5gDSo4XMGJY/8g0VJO1e1tsZUDIMLDc.
RSA key fingerprint is MD5:8a:69:eb:d3:24:04:bd:c6:42:3e:7b:fb:40:15:dc:2d.
Are you sure you want to continue connecting (yes/no)? yes                  #第一次需要确认连接
Warning: Permanently added '[192.168.200.100]:2222' (RSA) to the list of known hosts.

猜你喜欢

转载自www.cnblogs.com/CMX_Shmily/p/12021872.html