The apt software source of the docker image of the default ubuntu is too slow to access sed in China, which often causes the installation ubuntu can be used anywhere.sed -i s@/archive.ubuntu.com/@/mirrors.aliyun.com/@g /etc/apt/sources.list
sed -i s@/security.ubuntu.com/@/mirrors.aliyun.com/@g /etc/apt/sources.list
apt-get clean
apt-get update
ubuntu
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