Make build work (if not the actual plugin).
Make build work (if not the actual plugin).

Signed-off-by: Nigel Magnay <0c422baef524090650d5dc166beb1e8269e8fa23@gmail.com>

eaglerainbow/docker-plugin,eaglerainbow/docker-plugin,jenkinsci/docker-plugin,eaglerainbow/docker-plugin,jenkinsci/docker-plugin,jenkinsci/docker-plugin