Git and Jenkins versions update

[david-deck]

Hello.

My name is David DECK.

I work for Charles André Group as a technical architect (and occasionally as a Java software architect).

I am in charge of our CI platform, among others things. I am trying to replace our old Jenkins Windows service by your Docker images, so I've upgraded Git and Jenkins to their last stable version. I tough it might br usefull for others.

Best regards, David DECK