Setup XQuartz on Mac to run Docker GUI apps.

setup-xquartz-docker.sh

# References:
#   http://sourabhbajaj.com/blog/2017/02/07/gui-applications-docker-mac/
#   https://forums.docker.com/t/how-to-run-gui-apps-in-containiers-in-osx-docker-for-mac/17797/21
#   https://fredrikaverpil.github.io/2016/07/31/docker-for-mac-and-gui-applications/

# Install XQuartz
brew cask install xquartz
# Allow network connections
defaults write org.macosforge.xquartz.X11 nolisten_tcp 0
# Don't launch terminal when starting XQuartz
defaults write org.macosforge.xquartz.X11 app_to_run /usr/bin/true
# Launch XQuartz
open -a XQuartz
# Add this PC's hostname
xhost + $(hostname)
# Run a Docker GUI container
docker run --rm -d -e DISPLAY="$(hostname)":0 -v /tmp/.X11-unix:/tmp/.X11-unix --name vscode jess/vscode