1. 创建Dockerfile

1.1. 创建Dockerfile

本例子用安装lnmp1.4的包

# Use parent image
FROM centos:centos7

USER root

# Set the working directory to /www
WORKDIR /www

# Copy the current directory contents into the container at /www
ADD . /www

# Install any needed packages
RUN rpm --rebuilddb && yum -y install wget tar
RUN wget --no-check-certificate https://pypi.python.org/packages/source/s/setuptools/setuptools-1.4.2.tar.gz
RUN tar -xvf setuptools-1.4.2.tar.gz && cd setuptools-1.4.2 && python setup.py install && easy_install pip
RUN wget -c http://soft.vpser.net/lnmp/lnmp1.4.tar.gz && tar zxf lnmp1.4.tar.gz && pwd && ls -la
RUN pip install pexpect
RUN python pexpect_init.py


# Make port 80 available to the world outside this container
EXPOSE 80

# Define environment variable
ENV NAME LNMP

# Run  when the container launches
CMD ["/bin/bash"]

2. 自动安装lnmp脚本 pexpect_init.py

-用来自动安装lnmp1.4的包

#!/usr/bin/python

import sys
import pexpect

password = 'password'
expect_list = [
'You have 5 options for your DataBase install',
'Please setup root password of MySQL',
'Do you want to enable or disable the InnoDB Storage Engine',
'You have 6 options for your PHP install',
'You have 3 options for your Memory Allocator install',
'Press any key to install'
]
answer_list = [
'3',
'root',
'Y',
'7',
'1',
'y'
];

cmd = "cd /www/lnmp1.4/ && ./install.sh lnmp"
p = pexpect.spawn("/bin/bash", ["-c", cmd])
p.logfile_read = sys.stdout
p.timeout = 3600*50
p.maxread = 1

try:
    while True:
        idx = p.expect(expect_list)
        print p.before + expect_list[idx],
        print answer_list[idx]
        p.sendline(answer_list[idx])

except pexpect.TIMEOUT:
    print >>sys.stderr, 'timeout'
except pexpect.EOF:
    print p.before
    print >>sys.stderr, '<the end>'