Upgrading Tutor to lilac.master -- a braindump

This should now be working: I added docker-compose build to the local start command in core Tutor: tutor/tutor/commands/compose.py at 9e617b9c01eb685b831e4a70cc43918a15aa7be2 · overhangio/tutor · GitHub

I updated the lilac branch of the both tutor and tutor-mfe repositories accordingly.

Note however that I still have no clue how we are going to do the same thing in Kubernetes…