Fix base image build having a selinux dependency collision

[gerrod3]

Honestly have no idea what I am doing, but the error with sed: File not found is because buildah was failing to install due to seeing selinux-policy in the system. https://github.com/pulp/pulp-oci-images/actions/runs/10894878722/job/30232255402#step:8:5020

Error: 
 Problem: package buildah-2:1.37.2-1.el9.aarch64 from appstream requires containers-common >= 2:1-2, but none of the providers can be installed
  - package containers-common-2:1-13.el9.noarch from appstream requires (container-selinux >= 2:2.162.1 if selinux-policy), but none of the providers can be installed
  - package containers-common-2:1-21.el9.noarch from appstream requires (container-selinux >= 2:2.162.1 if selinux-policy), but none of the providers can be installed
  - package containers-common-2:1-52.el9.aarch64 from appstream requires (container-selinux >= 2:2.162.1 if selinux-policy), but none of the providers can be installed
  - package containers-common-2:1-55.el9.aarch64 from appstream requires (container-selinux >= 2:2.162.1 if selinux-policy), but none of the providers can be installed
  - package containers-common-2:1-61.el9.aarch64 from appstream requires (container-selinux >= 2:2.162.1 if selinux-policy), but none of the providers can be installed
  - package containers-common-2:1-8.el9.noarch from appstream requires (container-selinux >= 2:2.162.1 if selinux-policy), but none of the providers can be installed
  - package containers-common-2:1-90.el9.aarch64 from appstream requires (container-selinux >= 2:2.162.1 if selinux-policy), but none of the providers can be installed
(try to add '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages)
  - package containers-common-2:1-91.el9.aarch64 from appstream requires (container-selinux >= 2:2.162.1 if selinux-policy), but none of the providers can be installed
  - problem with installed package selinux-policy-38.1.44-1.el9.noarch
  - cannot install the best candidate for the job
  - package container-selinux-3:2.228.1-1.el9.noarch from appstream is filtered out by exclude filtering
  - package container-selinux-3:2.229.0-1.el9.noarch from appstream is filtered out by exclude filtering
  - package container-selinux-3:2.230.0-1.el9.noarch from appstream is filtered out by exclude filtering
  - package container-selinux-3:2.231.0-1.el9.noarch from appstream is filtered out by exclude filtering
  - package container-selinux-3:2.232.1-1.el9.noarch from appstream is filtered out by exclude filtering

After reading this linked article in the containerfile (https://www.redhat.com/sysadmin/podman-inside-container) I guessed we don't want selinux in order to do podman inside podman. So I found an earlier install that was dragging in selinux, openldap-devel, and excluded it from install. Maybe it would be better to switch the order of the installs and have podman/buildah installed first? Would like some suggestions on the best approach.

[lubosmj]

Interesting. If it helps... Cannot give you suggestions with regard to the install order.