1- Install Jenkins

https://jenkins.io/download/

Ubuntu 17.4:

https://websiteforstudents.com/how-to-install-jenkins-on-ubuntu-17-04-17-10/

sudo apt update && sudo apt dist-upgrade && sudo apt autoremove
sudo wget -q -O - https://pkg.jenkins.io/debian/jenkins-ci.org.key | sudo apt-key add -
sudo sh -c "echo 'deb https://pkg.jenkins.io/debian-stable binary/' > /etc/apt/sources.list.d/Jenkins.list"
sudo apt update
sudo apt install jenkins
sudo systemctl stop jenkins.service
sudo systemctl start jenkins.service
sudo systemctl enable jenkins.service

http://localhost:8080/

jkriker / password