new omv install stable+docker issue

ok;
so i reverted back to stable omv not 5.05 and can enable docker in omv but it will not install virtualbox is ok .
for what i want to do i will need virtual box and docker in omv.
I could do it with vbox but thought docker was better for pihole and my pfsense setup I wish to do.
the repo info is there but greyed out on edit .
not showing up like virtual box as not installed .
now this reinstall it installed odd i had to do the parts one by one at a main list not in the whole installer way.
was a bit odd but had that issue at first with 5.05 at one point.
any help would be great.
thank you