Dockerfile 中的echo的使用方式和bash中的使用方式是有區別的
下面是一個 Dockerfile 通過echo的方式更換apt-get源和pip源
FROM python:3.5.8-stretch
# 更新緩存
RUN echo 'deb http://mirrors.aliyun.com/debian stretch main contrib non-free\n\
deb http://mirrors.aliyun.com/debian stretch-proposed-updates main contrib non-free\n\
deb http://mirrors.aliyun.com/debian stretch-updates main contrib non-free\n\
deb http://mirrors.aliyun.com/debian-security/ stretch/updates main non-free contrib\n'\
> /etc/apt/sources.list \
&& apt-get update
# 配置pip
RUN mkdir /root/.pip \
&& echo '[global]\n\
trusted-host = mirrors.aliyun.com\n\
index-url = https://mirrors.aliyun.com/pypi/simple\n'\
> /root/.pip/pip.conf