hildenae@grune ~ $ sudo docker run -i -t ubuntu:14.04 /bin/bash
root@47528119cb77:/# ls
bin  boot  dev  etc  home  lib  lib64  media  mnt  opt  proc  root  run  sbin  srv  sys  tmp  usr  var
root@47528119cb77:/# exit
exit
hildenae@grune ~ $ sudo docker ps --all
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS                     PORTS               NAMES
47528119cb77        ubuntu:14.04        "/bin/bash"         10 seconds ago      Exited (0) 4 seconds ago                       goofy_swartz
hildenae@grune ~ $ sudo docker start 47528119cb77
47528119cb77
hildenae@grune ~ $ sudo docker attach 47528119cb77
root@47528119cb77:/#
root@47528119cb77:/# echo "foo" > bar
root@47528119cb77:/# cat bar
foo
root@47528119cb77:/# exit
exit
hildenae@grune ~ $ sudo docker ps --all
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS                     PORTS               NAMES
47528119cb77        ubuntu:14.04        "/bin/bash"         37 seconds ago      Exited (0) 2 seconds ago                       goofy_swartz
hildenae@grune ~ $ sudo docker start 47528119cb77
47528119cb77
hildenae@grune ~ $ sudo docker attach 47528119cb77
root@47528119cb77:/# cat bar
foo
root@47528119cb77:/#