I work for a publishing company.
We are planning to publish a book about web development, and are going to create web applications in Ubuntu environment.
We are now considering web development novices as the major audience of the book,
so we'd like to provide them with Ubuntu in virtual image for Oracle Virtualbox(only the virtualbox image file will be provided on a DVD, not the Virtualbox program itself).
Given that, I'd like to know if it would be illegal to do that or violate the Virtualbox license.