I have one container that is dead, but I can't remove it, as you can see below.
How can I remove it? Or how can I clean my system manually to remove it?
:~$ docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
78b0dcaffa89 ubuntu:latest "bash -c 'while tr..." 30 hours ago Dead leo.1.bkbjt6w08vgeo39rt1nmi7ock
:~$ docker rm --force 78b0dcaffa89
Error response from daemon: driver "aufs" failed to remove root filesystem for 78b0dcaffa89ac1e532748d44c9b2f57b940def0e34f1f0d26bf7ea1a10c222b: no such file or directory