Use Docker to sandbox browser (Firefox ?)
On Mac OS X, I use XQuartz.
We need socat to expose socat
ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" < /dev/null 2> /dev/null
brew install socat
DISPLAY=$( find /private/tmp/com.apple.launchd.* -name org.macosforge.xquartz:0 )
socat TCP-LISTEN:6000,reuseaddr,fork UNIX-CLIENT:\"$DISPLAY\"