Hello.
There is a solution of problem with device or resource busy ?
Example of error:
Error response from daemon: driver "overlay" failed to remove root filesystem for b030cf52bc61d5052c8d7ca2d781715055cfe00ccfcf87601e7c5381c0078858: remove /var/lib/docker/overlay/8764a60eaa9d5ce9d1465d22737254afa760cceaa287d37d3d63922f89cf0558/merged: device or resource busy
My version of linux core:
Linux version 3.10.0-514.el7.x86_64 (gcc version 4.8.5 20150623 (Red Hat 4.8.5-11) (GCC) )