Best way to deploy files to new VM from context

I have a template with this bit included:

  FILES_DS="$FILE[IMAGE=\"krb5.conf\", IMAGE_UNAME=\"oneadmin\"]",

Does OpenNebula have a simple builtin way to actually deploy the “/etc/krb5” (or any other file) to that path in a newly created VM? I just want to see what the most elegant way to do it is, or do I have to include an init script or a start_script to ‘cp’ the file into the VM OS? I looked through the docs and I haven’t found any references to that, only running init scripts. Thanks