When trying to start a multiple containers with Docker Toolbox, I got below error.
cgroups: cannot found cgroup mount destination: unknown
This happens because those containers you tried to start have systemd, and here's solution.
sudo mkdir /sys/fs/cgroup/systemd sudo mount -t cgroup -o none,name=systemd cgroup /sys/fs/cgroup/systemd
Make sure you do this on docker-machine 'default' server, which you can login through terminal soft as TeraTerm with ip '192.168.99.100', user 'docker' and password 'tcuser'.
Or, if you are in Docker Quick Terminal, you can execute there by connecting "docker-machine ssh default" as well.
Note 'default' is volatile, you need to type above command every time you start docker-machine.
