Jenkins slave to run browser tests in Chrome

Sets up a VirtualBox VM running a Jenkins slave in Ubuntu Linux that has a Chrome browser available. It is not headless, so it has to be started on a machine with a GUI.

Getting started

You will need VirtualBox and Vagrant to start the VM. To start the slave, follow these steps:

1. Add a new JNLP slave node to your master Jenkins. Set its home directory to /home/jenkins
2. Copy config.yml.dist to config.yml
3. Set the correct Jenkins master URL in config.yml
4. Set the slave's JNLP URL in config.yml, this should be something like <JENKINS_MASTER_URL>/computer/<SLAVE_NAME>/slave-agent.jnlp
5. Set the slave's secret in config.yml as configured in Jenkins
6. Run vagrant up
7. The VM should fire up and show a black screen with a cursor. The slave is now waiting for instructions from the master.