Jenkins strength is also its weakness. It's like a swiss army knife that, especially combined with plugins, can do just about anything in any way. This makes it

Jenkins strength is also its weakness. It's like a swiss army knife that, especially combined with plugins, can do just about anything in any way. This makes it hard to find support, best practices etc. Anyway, you can also have your jobs completely run inside containers, but apparently they chose not to do that in your first job (or containers where simply not a thing yet). See: https://jenkins.io/doc/book/pipeline/docker/ https://jenkins.io/doc/book/pipeline/docker/