Docker 容器内安装Python3环境

apt-get update
apt-get upgrade
apt install build-essential -y
apt install libncurses5-dev libgdbm-dev libnss3-dev libssl-dev libreadline-dev libffi-dev -y
apt install zlib1g-dev
apt install wget
apt install openssl
apt install curl
apt install libsqlite3-dev
wget https://www.python.org/ftp/python/3.7.3/Python-3.7.3.tgz
tar -xvf Python-3.7.3.tgz
cd Python-3.7.3
./configure —enable-loadable-sqlite-extensions
make
make install
apt-get clean
rm -rf /var/lib/apt/lists/*
ln -s /usr/local/bin/pip3 /usr/bin/pip
ln -s /usr/local/bin/python3 /usr/bin/python

在使用docker容器时，有时候里边没有安装vim，使用vim命令时会提示：vim: command not found，这个时候就需要安装vim，可是当你敲apt-get install vim命令时，提示：

root@1b4671904bfa:/# apt-get install vim
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package vim

解决方式：

1.配置国内镜像源

实际在使用过程中，运行 apt-get update，然后执行 apt-get install -y vim，下载地址由于是海外地址，下载速度异常慢而且可能中断更新流程，所以做下面配置：

mv /etc/apt/sources.list /etc/apt/sources.list.bak
echo "deb http://mirrors.163.com/debian/ jessie main non-free contrib" >/etc/apt/sources.list
echo "deb http://mirrors.163.com/debian/ jessie-proposed-updates main non-free contrib" >>/etc/apt/sources.list
echo "deb-src http://mirrors.163.com/debian/ jessie main non-free contrib" >>/etc/apt/sources.list
echo "deb-src http://mirrors.163.com/debian/ jessie-proposed-updates main non-free contrib" >>/etc/apt/sources.list

2.执行更新和安装命令 

apt-get update
apt-get install -y vim，有可能会出现下面的提示：
WARNING: The following packages cannot be authenticated!
  libgpm2 vim-common vim-runtime vim
E: There were unauthenticated packages and -y was used without —allow-unauthenticated
用下面的命令执行
apt-get install -y vim --allow-unauthenticated

pip已经安装，但是/usr/local/bin/pip: No such file or directory

解决方法：

pip在usr/local/bin/pip，如果已经安装pip，要先进行卸载
1.sudo apt-get remove python-pip
2.wget https://bootstrap.pypa.io/get-pip.py
3.python get-pip.py
4.hash -r