I use RancherOS 0.3.1 and created a container to test "bridged network", but container stays in starting mode.
After a will I deleted and purged the container. Then I tried to delete the downloaded image to clean up the images.
system-docker works fine (system-docker images show me the list of images), but not with the (user) docker. Here I get the error message.
FATA[0000] Error response from daemon: open /var/lib/docker/graph: too many open files
Just to report it because it could be a bug.