Centos – Failing to run yum update in CentOS 8

I want to preface this post with this disclaimer: I am somewhat unfamiliar with how yum functions and I am also unfamiliar with the details of the changes that are required since CentOS 8 became EOL.

About a month back, my container build was unable to successfully run because when I would yum update, I got an error. I found the solution here and added this to my container build:

sed -i 's/mirrorlist/#mirrorlist/g' /etc/yum.repos.d/CentOS-Linux-*
sed -i 's|#baseurl=http://mirror.centos.org|baseurl=http://vault.centos.org|g' /etc/yum.repos.d/CentOS-Linux-*

This got me by for awhile, until today and it seemed to break again.

bash-4.4# yum update
CentOS Linux 8 - AppStream                                                                                                                                                                                   149 kB/s | 8.4 MB     00:58
CentOS Linux 8 - BaseOS                                                                                                                                                                                      113 kB/s | 4.6 MB     00:41
CentOS Linux 8 - Extras                                                                                                                                                                                      716  B/s |  10 kB     00:14
CentOS Linux 8 - PowerTools                                                                                                                                                                                  0.0  B/s |   0  B     01:26
Errors during downloading metadata for repository 'powertools':
  - Curl error (28): Timeout was reached for http://vault.centos.org/centos/8/PowerTools/x86_64/os/repodata/981185e5d80d51024e5246ed47f7f69605160518c22103379bb71376e2dccb14-filelists.xml.gz [Operation too slow. Less than 1000 bytes/sec transferred the last 30 seconds]
  - Curl error (28): Timeout was reached for http://vault.centos.org/centos/8/PowerTools/x86_64/os/repodata/4b94ac0555ec1e15718dd9d77f995ec7096d98974b4c7a427b8e03c20e9c663d-primary.xml.gz [Operation too slow. Less than 1000 bytes/sec transferred the last 30 seconds]

So I have found some other solutions, but none of them have worked. For example, I found this post: CentOS 8 upgade – How to resolve Warning: failed loading '/etc/yum.repos.d/CentOS-AppStream.repo', skipping

It had me to the following:

dnf --disablerepo '*' --enablerepo extras swap centos-linux-repos centos-stream-repos

dnf distro-sync

But with that, I get this:

    bash-4.4# dnf --disablerepo '*' --enablerepo extras swap centos-linux-repos centos-stream-repos
CentOS Linux 8 - Extras                                                                                                                                                                                       22 kB/s |  10 kB     00:00
Error:
 Problem 1: conflicting requests
  - nothing provides centos-gpg-keys = 1:8-3.el8 needed by centos-stream-repos-8-3.el8.noarch
 Problem 2: package centos-linux-release-8.3-1.2011.el8.noarch requires centos-repos(8), but none of the providers can be installed
  - conflicting requests
  - problem with installed package centos-linux-release-8.3-1.2011.el8.noarch
  - nothing provides centos-gpg-keys = 1:8-3.el8 needed by centos-stream-repos-8-3.el8.noarch
(try to add '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages)

If I am giving the condition that I am unable to change my underlying base image for this container (CentOS 8), what is a short term solution for this? I know the long-term solution is to switch my OS, but I need to limp along for a short amount of time.

Thank you in advance!