which tool should I use to customize a vm ?

[PICCA Frederic-Emmanuel <frederic-emmanuel.picca@synchrotron-soleil.fr>]

Hello, I think that  this question was resolved a long time ago, but I did not found an answer from the cloud team.

I need to create a bunch of vm image for an openstack instance. In this images, we need to install a bunch of software, Debian packages, pure binary packages, and does some customisation of the configuration for these packages.
So I would like to know which tool should be use for this purpose.

thanks for your consideration and I am sorry if this question has already a definitive answer :)

Cheers

Frederic