Offline package installation

The competitions use a special bootable key, so yes, offline installation is mandatory.
The guy which organizes it is not employed as a system administrator, he is a teacher whose work in this task is mainly pro bono.
So, basically, if I can tell him just apt-get install julia julia-packages, the answer will probably be yes, but I can not ask him to plunge into the details of a software he has probably never used.

This post seems also related to these problems

Perhaps I have to wait Pkg3