I have just set up the Docker/WSL2 integration on my computer, and it looks very promising. 

Update: I've now just set my WSL back to version 1 and reinstalled Docker. As I said - it looks promising, but we're not there yet. Fair enough - running on the insider release of Windows and with a "beta" flag set in Docker, you can't really complain if it stops working. For now, I need it working, so back to the old set up. I'm still looking forward to when they get it stable.