Jenkins Fist Steps

https://www.popularowl.com/blog/installing-configuring-jenkinsci-nginx/

https://moduscreate.com/blog/setup-jenkins-ubuntu-14-04-lts/
https://moduscreate.com/blog/setup-jenkins-ubuntu-14-04-lts/

https://askubuntu.com/questions/464755/how-to-install-openjdk-8-on-14-04-lts

https://stackoverflow.com/questions/10063828/what-build-servers-can-function-with-workers-behind-nat
https://wiki.jenkins.io/display/JENKINS/JenkinsBehindProxy
https://wiki.jenkins.io/display/JENKINS/Distributed+builds
http://jenkins-ci.361315.n4.nabble.com/Slaves-behind-NAT-anyone-td369334.html