sudo mkdir -p  /media/netdir/source/raspberrypi/4-04_docker_readynas
pi@raspberry48:~ $ sudo docker run   -it  -v /media/netdir/source/raspberrypi/4-04_docker_readynas:/mnt/compile  xjzj/armel_make_phantomjs  /bin/bash
docker: Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?.
See 'docker run --help'.
pi@raspberry48:~ $ 
pi@raspberry48:~ $ 
pi@raspberry48:~ $ ls -l /media/netdir/source/raspberrypi
total 0
drwxrwxrwx+ 1 systemd-network users 18 Dec  6 19:53 3
drwxrwxrwx+ 1              99    99 18 Feb  9 21:53 4-01_rasp
drwxrwxrwx+ 1              99    99 18 Feb 10 18:45 4-02_readynas
drwxrwxrwx+ 1 root            root   0 Mar  4 20:02 4-04_docker_readynas
drwxrwxrwx+ 1 root            root  18 Feb 29 15:59 4-05_chroot_readynas
drwxrwxrwx+ 1              99    99 18 Dec  6 19:46 org
pi@raspberry48:~ $ 
pi@raspberry48:~ $ 
pi@raspberry48:~ $ ls -l /var/run/docker.sock
srw-rw---- 1 root docker 0 Feb 29 15:52 /var/run/docker.sock
pi@raspberry48:~ $ 
pi@raspberry48:~ $