前言

使用docker安装jenkins环境，jenkins构建的workspace目录默认是在容器里面构建的，如果我们想执行python3的代码，需进容器内部安装python3的环境。 ?

进jenkins容器

进 Docker容器 , 加上-u root 以root用户权限进入容器

docker?exec?-it?-u?root?容器id?/bin/bash

查看当前操作系统cat /etc/issue

root@3be4b6cd9b8c:/#?uname?-a
 Linux ?3be4b6cd9b8c?4.19.121- Linux kit?#1?SMP?Tue?Dec?1?17:50:32?UTC?2020?x86_64?GNU/ Linux 
root@3be4b6cd9b8c:/#?cat?/etc/issue
Debian?GNU/ Linux ?9?\n?\

这里查到的是Debian系统（不是ubuntu， 也不是centos），这里yum是没有的，所以不能用yum安装了，这里用apt-get代替yum 先执行更新apt-get

apt-get?update

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容器内部安装python3环境

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下载python3安装包

root@3be4b6cd9b8c:/var/jenkins_home#?cd?/var/jenkins_home/
root@3be4b6cd9b8c:/var/jenkins_home#?mkdir?python3
root@3be4b6cd9b8c:/var/jenkins_home#?cd?python3/
root@3be4b6cd9b8c:/var/jenkins_home/python3#?wget?https://HdhCmsTestpython.org/ftp/python/3.7.6/Python-3.7.6.tgz
root@3be4b6cd9b8c:/var/jenkins_home/python3#?tar?-xvf?Python-3.76.tgz
root@3be4b6cd9b8c:/var/jenkins_home/python3#?ls
Python-3.7.6??Python-3.7.6.tgz
root@3be4b6cd9b8c:/var/jenkins_home/python3#?cd?Python-3.7.6
root@3be4b6cd9b8c:/var/jenkins_home/python3/Python-3.7.6#?./configure?--prefix=/var/jenkins_home/python3
checking?build?system?type...?x86_64-pc- Linux -gnu
checking?host?system?type...?x86_64-pc- Linux -gnu
checking?for?python3.7...?no
checking?for?python3...?no
checking?for?python...?python
checking?for?--enable-universalsdk...?no
checking?for?--with-universal-archs...?no
checking?MACHDEP...? Linux 
checking?for?--without-gcc...?no
checking?for?--with-icc...?no
checking?for?gcc...?no
checking?for?cc...?no
checking?for?cl.exe...?no
configure:?error:?in?`/var/jenkins_home/python3/Python-3.7.6':
configure:?error:?no?acceptable?C?compiler?found?in?$PATH
See?`config.log'?for?more?details

执行 ./configure --prefix=/var/jenkins_home/python3时报上面错：configure: error: no acceptable C compiler found in $PATH ?

apt-get 安装依赖包

这个是因为缺少gcc相关依赖包，使用apt-get代替yum安装相关依赖包

apt-get?-y?install?gcc?automake?autoconf?libtool?make
apt-get?-y?install?make*
apt-get?-y?install?zlib*
apt-get?-y?install?openssl?libssl-dev
apt-get?install?sudo

由于python3.7以上版本在make install步骤中会出现缺少依赖（缺少_ctype）的错误提示，所以还需安装下面的依赖包

sudo?apt-get?update
sudo?apt-get?install?build-essential?python-dev?python-setuptools?python-pip?python-smbus
sudo?apt-get?install?build-essential?libncursesw5-dev?libgdbm-dev?libc6-dev
sudo?apt-get?install?zlib1g-dev?libsqlite3-dev?tk-dev
sudo?apt-get?install?libssl-dev?openssl
sudo?apt-get?install?libffi-dev
sudo?apt-get?install?libxpm-dev?libxext-dev?
sudo?apt-get?install?zlib1g-dev?libbz2-dev?libssl-dev?libncurses5-dev?libsqlite3-dev

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make编译安装

在/var/jenkins_home/python3/Python-3.7.6目录执行make和make install 安装

./configure?--prefix=/var/jenkins_home/python3?--with-ssl
make
make?install

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添加软链接

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添加python3软链接

ln?-s?/var/jenkins_home/python3/bin/python3.6?/usr/bin/python3

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添加pip3软链接

ln?-s?/var/jenkins_home/python3/bin/pip3?/usr/bin/pip3

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输入pip3 和python3检查环境

root@3be4b6cd9b8c:/#?python3?--version
Python?3.7.6
root@3be4b6cd9b8c:/#?pip3?--version
pip?19.2.3?from?/var/jenkins_home/python3/lib/python3.7/site-packages/pip?(python?3.7)
root@3be4b6cd9b8c:/#

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