使用openjdk:8和openjdk:11作为基础镜像构建业务镜像，但是使用中发现镜像里面没有ping、telnet等基础命令

在容器中使用:

将源更换为清华源

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cat > /etc/apt/sources.list << EOF
deb https://mirrors.tuna.tsinghua.edu.cn/debian/ bullseye main contrib non-free
deb https://mirrors.tuna.tsinghua.edu.cn/debian/ bullseye-updates main contrib non-free
deb https://mirrors.tuna.tsinghua.edu.cn/debian/ bullseye-backports main contrib non-free
deb https://mirrors.tuna.tsinghua.edu.cn/debian-security bullseye-security main contrib non-free
EOF

安装软件

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apt-get clean
apt-get update
apt-get install -y curl telnet vim iputils-ping net-tools

Dockerfile中使用:

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RUN echo "deb https://mirrors.tuna.tsinghua.edu.cn/debian/ bullseye main contrib non-free" >/etc/apt/sources.list 
RUN echo "deb https://mirrors.tuna.tsinghua.edu.cn/debian/ bullseye-updates main contrib non-free" >>/etc/apt/sources.list 
RUN echo "deb https://mirrors.tuna.tsinghua.edu.cn/debian/ bullseye-backports main contrib non-free" >>/etc/apt/sources.list 
RUN echo "deb https://mirrors.tuna.tsinghua.edu.cn/debian-security bullseye-security main contrib non-free" >>/etc/apt/sources.list
RUN  apt-get clean
RUN  apt-get update
RUN  apt-get install -y curl telnet vim iputils-ping net-tools

alpine安装telnet、curl等命令

很多镜像是使用alpine作为基础镜像，体积小，但apline精简了很多基础组件因此调试起来很麻烦，下方总结了常用的alpine组件安装方法：

功能 命令 备注
镜像加速 sed -i ‘s/dl-cdn.alpinelinux.org/mirrors.ustc.edu.cn/g’ /etc/apk/repositories 将原装的alpine库替换成国内的ustc库
apk库更新 apk update
安装curl apk add curl
安装telnet apk add busybox-extras
偷懒N合1 sed -i ‘s/dl-cdn.alpinelinux.org/mirrors.ustc.edu.cn/g’ /etc/apk/repositories && apk update && apk add curl && apk add busybox-extras