The objective is a get the IP of the Jenkins in internal network our client.

1 - Script connect:

tell application "/Applications/Tunnelblick.app"  
	activate  
	disconnect ("name_your_network_tunnelblick")  
end tell

Use Script Editor in your MAC to create script above and save for execution.

Basically you change name_your_network_tunnelblick to your network in both files (connect and disconnect)

OS Mac with AppleScript and VPN configured with Tunnelblick

1- Gitlab CI - Ready
2- Github Action - TODO