I am trying to copy a set of files from docker host to container. On a AUFS system directly going into /var/lib/docker/aufs/... works. However I am another system with Fedor
This answer provides you a different view of copying.
1> Use this way provided you know the IP of the container. If your aim is just to take the files form the host system and put it in the container you can do it using different ways. File transfer protocol is a easier way. you can setup an SSH server(sshd) on your docker container and use scp
or any other file transfer tools to do it.
2> Sharing files via volumes using this command docker run -ti -v /host-path-of-directory-having-files/:/target-path-in-container/:rw image-name bash
. You can refer this link https://docs.docker.com/userguide/dockervolumes/