How to fix docker error "no subsystem for mount"?

Question

I pulled the drools-workbench-showcase image

docker pull jboss/drools-workbench-showcase

But if I try to run it in a docker container like it's proposed on the drools-workbench-showcase site:

docker run -p 8080:8080 -p 8001:8001 -d --name drools-workbench jboss/drools-workbench-showcase:latest

I get an error:

docker: Error response from daemon: rpc error: code = 2 desc = "oci runtime error: could not synchronise with container process: no subsystem for mount".

How can I fix it? (A couple of months ago I did the same and it worked without any additional efforts.) My OS is Ubuntu 18.04

Answer 1

So, what I've discovered in a meanwhile. It was an ubuntu-docker issue. Recently I upgraded my ubuntu from 16.04 to 18.04. This change seems to be incompatible with the docker version I had, 1.11.0. I followed the instructions from the site How to Install and Use Docker on Ubuntu 18.04 and installed a new docker version, 18.06.1-ce (above my old one). Now it works. Reading the comment Docker fails with "no subsystem for mount". Comment 29. helped me to come to this solution.