install : docker guy out to mac https://sourabhbajaj.com/blog/2017/02/07/gui-applications-docker-mac/
install XQuartz
mulder@~$ cat /usr/local/bin/run-docker-1
#!/bin/bash
open -a XQuartz
IP=$(ifconfig en0 | grep inet | awk '$1=="inet" {print $2}')
xhost + $IP
docker run -it -e DISPLAY=$IP:0 -v /tmp/.X11-unix:/tmp/.X11-unix -v /Users/mulder/Project/dockerfs:/dockerfs py3dev:init /bin/bash
mulder@~$
mulder@~$ run-docker-1
172.30.1.27 being added to access control list
root@741f5c4ee527:/# cd dockerfs/py3dev/
root@741f5c4ee527:/dockerfs/py3dev# ls
package.json plot_isotonic_regression.py
root@741f5c4ee527:/dockerfs/py3dev# python plot_isotonic_regression.py