Update 14/Aug/2018: I no longer maintain the package mentioned and the download links below are most likely broken.
I uploaded a VM image to dev.doepner.net: It is a minimalistic Debian VM that can be used as a base for lean servers. It is in OVA format, exported from Virtualbox 4.1.6. Details are in the corresponding txt file.
You can add the VM to your Virtualbox using “File” – “Import Appliance …”. VMware should also work but might require some compatibility conversion of the ova file.
Recipes for specific Nexus, Jenkins, Wiki, Bugzilla setups will follow … I will publish those as scripts/instructions relative to the minimal base image, rather than maintaining several VMs.