I am trying to install docker on an Ubuntu 16.04 on a remote webserver. However, I get an error that is really frustrating me. I have been installing docker a lot of times already, also on this OS, but this never happened.

I am stuck at sudo apt-get install -y docker-engine, when docker-engine cannot be installed:

~# systemctl status docker.service
● docker.service - Docker Application Container Engine
   Loaded: loaded (/lib/systemd/system/docker.service; enabled; vendor preset: enabled)
   Active: failed (Result: exit-code) since So 2017-03-05 17:47:20 CET; 32s ago
     Docs: https://docs.docker.com
 Main PID: 18194 (code=exited, status=1/FAILURE)

dockerd[18194]: time="2017-03-05T17:47:20.567753592+01:00" level=error msg="'overlay' not found as a supported filesystem on this host. Please e
dockerd[18194]: time="2017-03-05T17:47:20.569299675+01:00" level=error msg="'overlay' not found as a supported filesystem on this host. Please e
dockerd[18194]: time="2017-03-05T17:47:20.591796895+01:00" level=info msg="Graph migration to content-addressability took 0.00 seconds"
dockerd[18194]: time="2017-03-05T17:47:20.592394882+01:00" level=warning msg="Your kernel does not support oom control"
dockerd[18194]: time="2017-03-05T17:47:20.592410368+01:00" level=warning msg="Your kernel does not support memory swappiness"
dockerd[18194]: time="2017-03-05T17:47:20.592421460+01:00" level=warning msg="Your kernel does not support kernel memory limit"
dockerd[18194]: time="2017-03-05T17:47:20.592427398+01:00" level=warning msg="Unable to find cpu cgroup in mounts"
dockerd[18194]: time="2017-03-05T17:47:20.592458649+01:00" level=warning msg="Unable to find cpuset cgroup in mounts"
dockerd[18194]: time="2017-03-05T17:47:20.592490516+01:00" level=warning msg="mountpoint for pids not found"
dockerd[18194]: Error starting daemon: Devices cgroup isn't mounted

I added root to the group, also I found the advice to add GRUB_CMDLINE_LINUX="cgroup_enable=memory swapaccount=1" to the file /etc/default/grub, but that file does not exist!

I also tried sudo apt-get install cgroupfs-mount but without success :-(

Thank you for your help!