My dockerised build for TrinityCore 3.3.5

I’ve run my own TC 3.3.5 server on Ubuntu for some time for just playing around on.

Recently I discovered more difficulty rebuilding it though. …so I put a little effort into a little Dockerised automated build as a fall-back plan in case I could no longer build and run it on my preferred host.

I thought I would share it here in case anybody else finds it useful.

Comments and contributions are welcomed.