Not sure if this rates as a samba, docker, or ubuntu issue, but:
# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
2c93025ecbcf ubuntu:latest /bin/bash 11 seconds ago Up 11 seconds grave_sammet
# docker run --rm -v $(which docker):/docker -v /var/run/docker.sock:/docker.sock svendowideit/samba grave_sammet
/docker: error while loading shared libraries: libapparmor.so.1: cannot open shared object file: No such file or directory
Yet apparmor does exist:
# ldconfig -v|grep apparmor
libapparmor.so.1 -> libapparmor.so.1.1.0
Running on Ubuntu server 14.04.