无法从文件安装软件包，上次元数据过期检查，错误：找不到匹配项，Centos 8

问：

请告诉我我做错了什么。我无法从文件安装软件包。

早些时候，我尝试通过指向地址进行安装，但是

dnf install https://download.docker.com/linux/debian/dists/buster/pool/stable/amd64/containerd.io_1.4.4-1_amd64.deb
Last metadata expiration check: 0:24:44 ago on Tue 23 Mar 2021 09:06:41 PM UTC.
containerd.io_1.4.4-1_amd64.deb                                       1.0 MB/s |  27 MB     00:27    
Can not load RPM file: /var/cache/dnf/commandline-a76fe31ae310b0c7/packages/containerd.io_1.4.4-1_amd64.deb.
Could not open: /var/cache/dnf/commandline-a76fe31ae310b0c7/packages/containerd.io_1.4.4-1_amd64.deb

我已经下载了文件并尝试安装 dnf 和 yum

sudo dnf install /tmp/containerd.io_1.4.4-1_amd64.deb 
Last metadata expiration check: 0:13:47 ago on Tue 23 Mar 2021 08:47:58 PM UTC.
No match for argument: /tmp/containerd.io_1.4.4-1_amd64.deb
Error: Unable to find a match: /tmp/containerd.io_1.4.4-1_amd64.deb

我试过了

yum clean all

我添加了docker repo

我在 CentOS Linux 发行版 8.3.2011 上工作