Dockerfile【Python3.7.0 Centos7 Tornado ssh基础开发环境构建】

• dockerfile

# 【生产构建】开始 
FROM docker.io/centos
RUN useradd -d /home/workspace lee

# 【生产构建】构建sshd服务 openssh-server* 
RUN yum install  glibc-headers cpp  libgomp glibc-devel gcc zlib zlib-devel make  openssl openssl-devel  libssl-dev libffi  libffi-devel openssh-server*  pcre pcre-devel -y

# 【开发构建】关于sshd_config
RUN sed -i 's/#Port 22/Port 22/g' /etc/ssh/sshd_config
RUN sed -i 's/#ListenAddress 0.0.0.0/ListenAddress 0.0.0.0/g' /etc/ssh/sshd_config
RUN sed -i 's/#HostKey \/etc\/ssh\/ssh_host_rsa_key/HostKey \/etc\/ssh\/ssh_host_rsa_key/g' /etc/ssh/sshd_config
RUN sed -i 's/HostKey \/etc\/ssh\/ssh_host_dsa_key/#HostKey \/etc\/ssh\/ssh_host_dsa_key/g' /etc/ssh/sshd_config
RUN sed -i 's/HostKey \/etc\/ssh\/ssh_host_ecdsa_key/#HostKey \/etc\/ssh\/ssh_host_ecdsa_key/g' /etc/ssh/sshd_config
RUN sed -i 's/HostKey \/etc\/ssh\/ssh_host_ed25519_key/#HostKey \/etc\/ssh\/ssh_host_ed25519_key/g' /etc/ssh/sshd_config

# 【生产构建】下载Python3.7.0 
ADD  Python-3.7.0.tgz  /srv
RUN cd /srv/Python-3.7.0 && ./configure --prefix=/usr/local/python3  && make && make install && mv /usr/bin/python /usr/bin/python.bak && ln -s /usr/local/python3/bin/python3  /usr/bin/python


# 【生产构建】下载所需 python 包 Eviews
RUN /usr/local/python3/bin/pip3 install Tornado
RUN /usr/local/python3/bin/pip3 install pymysql

# 【开发构建】生成 ssh rsa 密钥与公钥
RUN echo 123456 | passwd --stdin root
RUN /usr/local/python3/bin/pip3 install pexpect
ADD ssh_keygen_auto.py /srv
RUN python /srv/ssh_keygen_auto.py
RUN mkdir /home/workspace/bin/
RUN echo -e "#!/bin/bash\n/usr/sbin/sshd -D\n/bin/bash" > /home/workspace/bin/docker_init 

# 【生产构建】删除多余包

#【生产构建】暴露端口 
EXPOSE 22 
#设置默认启动的命令 
ENV PATH /home/workspace/bin/:$PATH
CMD ["docker_init"]

• ssh_keygen_auto.py

# -*- coding:utf-8 -*-
#/usr/local/python3/bin/python3
import pexpect,sys
if __name__ == '__main__':
    command = 'ssh-keygen -t rsa -b 2048' 
    child = pexpect.spawn(command) 

    ret = child.expect([pexpect.TIMEOUT,'save the key', pexpect.EOF]) 
    if ret in [0]: 
        print('error connecting')
        child.close(force=True)
    if ret == 1: 
        print('------save the key------')
        #child.logfile = sys.stdout
        #print(type('/etc/ssh/ssh_host_rsa_key'))
        child.sendline('/etc/ssh/ssh_host_rsa_key')
        #child.logfile = sys.stdout

    ret = child.expect([pexpect.TIMEOUT,'Enter passphrase', pexpect.EOF])
    if ret == 1:
        print('------Enter passphrase------')
        child.sendline('\n\r')
    elif ret in [0]:   
        print('error connecting')
        child.close(force=True)

    ret = child.expect([pexpect.TIMEOUT,'Enter same passphrase', pexpect.EOF])
    if ret == 1:
        print('------Enter same passphrase again------')
        child.sendline('\n\r')
    elif ret in [0]:   
        print('error connecting')
        child.close(force=True)
    elif ret in [2]:   
        print('------ssh key gen ok------')
        child.close(force=True)