今天早上我在红帽（Linux 4.18.0-240.1.1.el8_3.x86_64）上的更新/升级都遇到了这个问题，不知道该怎么办。听起来 yum 因此完全被卡住了。
$ sudo yum update
Updating Subscription Management repositories.
Last metadata expiration check: 2:40:27 ago on Wed 16 Dec 2020 07:53:10 AM CST.
Error:
Problem: package docker-ce-3:20.10.1-3.el7.x86_64 requires containerd.io >= 1.4.1, but none of the providers can be installed
- cannot install the best update candidate for package docker-ce-3:19.03.14-3.el7.x86_64
- package containerd.io-1.4.3-3.1.el7.x86_64 is filtered out by modular filtering
(try to add '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages)