I'm trying to install docker on ubuntu xenial and am following this tutorial: https://docs.docker.com/engine/installation/linux/ubuntulinux/. So far it's gone without a hitch except for there apparently not being a linux-image-extra for my kernel version (4.6.0-040600-generic). The tutorial said that that wasn't required, though, so I figured it wasn't completely necessary.
I got to the point of running
sudo apt-get install docker-engine, and the install is hanging on
Setting up docker-engine (1.11.2-0~xenial) .... I've looked at
top and it's not using any cpu, so I don't think it's actually doing anything. I ended up restarting my computer, getting rid of the partly installed package with some combination of dpkg -r, apt-get --purge remove, and maybe some other related stuff that I've forgotten about, and I tried installing it again. It hung the same way.
How can I install this successfully?