Add dnf5-plugins into the generic container
    
    [root@ba1ab1388008 /]# dnf5 install dnf5-plugins  --setopt=install_weak_deps=False
    ...
    Total size of inbound packages is 2 MiB. Need to download 2 MiB.
    After this operation 13 MiB will be used (install 13 MiB, remove 0 B).
    ...
    
    Fixes: https://pagure.io/releng/issue/12105
    Fixes: https://pagure.io/releng/issue/12106