How to piggyback off an existing WinPE image to implement a custom script

Here’s a trick I used to make my Macrium Reflect boot USB auto-map network drives so that I’d no longer have to manually map them every time I booted it up, but this trick will work for other WinPE setups too, I presume. Firstly, you’ll need the Windows 10 ADK installedSecondly, you’ll need your WinPE…