UBI8 images are unable to update packages to UBI8.4, or install new packages as of 2021-05-21

Issue

• When using Red Hat Universal Base Images, specifically ubi8 images such as ubi8, ubi8/nodejs, and other images with ubi8 as a base, attempting to perform yum update from within the container shows an error:

$ podman run -it --user 0 registry.redhat.io/ubi8/nodejs-14:latest bash
bash-4.4# yum update -y
Updating Subscription Management repositories.
Unable to read consumer identity

This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.

Red Hat Universal Base Image 8 (RPMs) - BaseOS                                                            544 kB/s | 786 kB     00:01
Red Hat Universal Base Image 8 (RPMs) - AppStream                                                          12 MB/s | 7.4 MB     00:00
Red Hat Universal Base Image 8 (RPMs) - CodeReady Builder                                                  54 kB/s |  15 kB     00:00
Error:
 Problem 1: package perl-threads-1:2.21-2.el8.x86_64 requires libperl.so.5.26()(64bit), but none of the providers can be installed
  - cannot install both perl-libs-4:5.30.1-451.module+el8.3.0+6961+31ca2e7a.x86_64 and perl-libs-4:5.26.3-419.el8.x86_64
  - cannot install the best update candidate for package perl-threads-1:2.21-2.el8.x86_64
  - cannot install the best update candidate for package perl-libs-4:5.26.3-419.el8.x86_64
 Problem 2: package perl-threads-shared-1.58-2.el8.x86_64 requires libperl.so.5.26()(64bit), but none of the providers can be installed
  - cannot install both perl-libs-4:5.30.1-451.module+el8.3.0+6961+31ca2e7a.x86_64 and perl-libs-4:5.26.3-419.el8.x86_64
  - package perl-Errno-1.30-451.module+el8.3.0+6961+31ca2e7a.x86_64 requires perl(:MODULE_COMPAT_5.30.1), but none of the providers can be installed
  - cannot install the best update candidate for package perl-threads-shared-1.58-2.el8.x86_64
  - cannot install the best update candidate for package perl-Errno-1.28-419.el8.x86_64
  - package perl-libs-4:5.30.1-452.module+el8.4.0+8990+01326e37.x86_64 is filtered out by modular filtering
 Problem 3: package perl-Unicode-Normalize-1.25-396.el8.x86_64 requires libperl.so.5.26()(64bit), but none of the providers can be installed
  - cannot install both perl-libs-4:5.30.1-451.module+el8.3.0+6961+31ca2e7a.x86_64 and perl-libs-4:5.26.3-419.el8.x86_64
  - package perl-IO-1.40-451.module+el8.3.0+6961+31ca2e7a.x86_64 requires perl(:MODULE_COMPAT_5.30.1), but none of the providers can be installed
  - package perl-IO-1.40-451.module+el8.3.0+6961+31ca2e7a.x86_64 requires libperl.so.5.30()(64bit), but none of the providers can be installed
  - cannot install the best update candidate for package perl-Unicode-Normalize-1.25-396.el8.x86_64
  - cannot install the best update candidate for package perl-IO-1.38-419.el8.x86_64
  - package perl-libs-4:5.30.1-452.module+el8.4.0+8990+01326e37.x86_64 is filtered out by modular filtering
 Problem 4: package perl-Storable-1:3.11-3.el8.x86_64 requires libperl.so.5.26()(64bit), but none of the providers can be installed
  - cannot install both perl-libs-4:5.30.1-451.module+el8.3.0+6961+31ca2e7a.x86_64 and perl-libs-4:5.26.3-419.el8.x86_64
  - package perl-interpreter-4:5.30.1-451.module+el8.3.0+6961+31ca2e7a.x86_64 requires perl(:MODULE_COMPAT_5.30.1), but none of the providers can be installed
  - package perl-interpreter-4:5.30.1-451.module+el8.3.0+6961+31ca2e7a.x86_64 requires libperl.so.5.30()(64bit), but none of the providers can be installed
  - cannot install the best update candidate for package perl-interpreter-4:5.26.3-419.el8.x86_64
  - cannot install the best update candidate for package perl-Storable-1:3.11-3.el8.x86_64
  - package perl-libs-4:5.30.1-452.module+el8.4.0+8990+01326e37.x86_64 is filtered out by modular filtering
 Problem 5: package perl-Socket-4:2.027-3.el8.x86_64 requires libperl.so.5.26()(64bit), but none of the providers can be installed
  - cannot install both perl-libs-4:5.30.1-451.module+el8.3.0+6961+31ca2e7a.x86_64 and perl-libs-4:5.26.3-419.el8.x86_64
  - package perl-macros-4:5.30.1-451.module+el8.3.0+6961+31ca2e7a.x86_64 requires perl(:MODULE_COMPAT_5.30.1), but none of the providers can be installed
  - cannot install the best update candidate for package perl-macros-4:5.26.3-419.el8.x86_64
  - cannot install the best update candidate for package perl-Socket-4:2.027-3.el8.x86_64
  - package perl-libs-4:5.30.1-452.module+el8.4.0+8990+01326e37.x86_64 is filtered out by modular filtering
(try to add '--allowerasing' to command line to replace conflicting packages or '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages)

• This may happen in the context of docker, podman, buildah, skopeo, or OpenShift, including but not limited to container image builds.