Example of basic Jenkins setup with JCasC

references:

• https://www.digitalocean.com/community/tutorials/how-to-automate-jenkins-setup-with-docker-and-jenkins-configuration-as-code
• https://www.digitalocean.com/community/tutorials/how-to-automate-jenkins-job-configuration-using-job-dsl
• https://github.com/eficode-academy/jcasc-katas/blob/master/build-agents/README.md
• The most up-to-date list of suggested plugins can be inferred from the source code: https://github.com/jenkinsci/jenkins/blob/master/core/src/main/resources/jenkins/install/platform-plugins.json