This is a base image for Docker, which includes OpenJDK 8 and the Jenkins agent executable (slave.jar). This executable is an instance of the Jenkins Remoting library.
This image may instead be used to launch an agent using the Launch method of Launch agent via execution of command on the master. Try for example
docker run -i --rm --name agent --init pwbsladek/jenkins-alpine-jnlp-slave java -jar /usr/share/jenkins/slave.jar
after setting Remote root directory to /home/jenkins/agent
.
Starting from Remoting 3.8 there is a support of Work directories, which provides logging by default and change the JAR Caching behavior.
Call example:
docker run -i --rm --name agent1 --init -v agent1-workdir:/home/jenkins/agent pwbsladek/jenkins-alpine-jnlp-slave java -jar /usr/share/jenkins/slave.jar -workDir /home/jenkins/agent