Packaging my setup

OK, I have taken and installed Drupal (7.50) and added all of the modules and such that I’m going to want, so in short, I have set up a “baseline” install. Now what I would like to do, is package this up, so that when I want to build a new site, I would just install/unpack this baseline, and all of the modules, and such that I want are in and ready to go.

Here’s the question:

How do I “package it up”? I guess basically what I want to do, is make my own Distribution, though I don’t intend to put it up for download, I just want to have a nice simple baseline, to save me from having to install the many modules (and their supporting modules) that I use regularly.

I’ve got this done for Drupal 7.50, and once I get that all packaged up, I’d like to do the same basic thing with Drupal 8.

Drupal version: