Err:4 http://mirrors.163.com/debian-security buster/updates InRelease Temporary failure resolving 'mirrors.163.com' Reading package lists... W: Failed to fetch http://mirrors.163.com/debian/dists/buster/InRelease Temporary failure resolving 'mirrors.163.com' W: Failed to fetch http://mirrors.163.com/debian/dists/buster-updates/InRelease Temporary failure resolving 'mirrors.163.com' W: Failed to fetch http://mirrors.163.com/debian/dists/buster-backports/InRelease Temporary failure resolving 'mirrors.163.com' W: Failed to fetch http://mirrors.163.com/debian-security/dists/buster/updates/InRelease Temporary failure resolving 'mirrors.163.com' W: Some index files failed to download. They have been ignored, or old ones used instead.
解决办法：
touch daemon.json
{
"dns": ["8.8.8.8", "114.114.114.114"]
}
sudo service docker restart
