Reduce Container sizes

[Odilhao]

Before adding --nodocs and dnf clean all

REPOSITORY              TAG         IMAGE ID      CREATED         SIZE
quay.io/ehelms/foreman  nightly     a20e228905bb  10 seconds ago  884 MB
quay.io/ehelms/foreman-proxy  nightly     2d3a73f1ded9  29 seconds ago  458 MB

After --nodocs`` and dnf clean all`

REPOSITORY              TAG             IMAGE ID      CREATED        SIZE
quay.io/ehelms/foreman  nightly-nodocs  ab9ff2fb57a0  5 seconds ago  774 MB
quay.io/ehelms/foreman-proxy  nightly-nodocs  dfe53a6f8f3c  12 minutes ago  351 MB

[Odilhao]

I was thinking about a way to have each plugin installed here https://github.com/ehelms/foreman-quadlet/blob/b19ae38891af8971da78ec80781a99b554d81ccd/container-images/foreman/Containerfile#L9 in it's own layer, this would make pull faster in the future when we add more plugins, I'm still not sure on how to do that.