The jenkins-agent package is vailable at: https://launchpad.net/~tphan025/+archive/ubuntu/ppa
Follow the instruction in the PPA archive to install the package
sudo add-apt-repository ppa:tphan025/ppa
sudo apt update
sudo apt install jenkins-agent
The jenkins-agent service requires 3 environment variables to be set: JENKINS_URL
, JENKINS_AGENT
and JENKINS_TOKEN