Installing Docker on Debian Jessie require plymouth and other dangerous packages

Hi Friends,
I’m trying to install on my production VPS (Debian Jessie http and email server) “Collabora Office” for NextCloud, and for this I need Docker.
So following the collaboraonline tutoral, I tried to install Docker first.

But to my great surprise it requires these packages:

aufs-tools cgroupfs-mount docker-ce libnih-dbus1 libnih1 makedev mountall pigz plymouth

and some of them (plymouth for example) worry me, I would not compromise the server boot with delicate services.

Can I stay pacific or in fact there are some risk? :grimacing:

Many thanks! :smiley: