Jenkins, originally called Hudson, is an Open Source CI/CD tool.

Installation Guide

For installation on Ubuntu, administrators of the machine can follow the instructions below^[1]:

Step 1: Update and Install Java

sudo apt get

Then, one needs to install Java Development Kit:

sudo apt install openjdk-8-jdk

↑ phoenix NAP, How to Install Jenkins on Ubuntu 18.04, https://phoenixnap.com/kb/install-jenkins-ubuntu

Jenkins