Running a WireGuard mesh on an 8-year-old MIPS router, with no selfhosted server

I like the idea. I would love to try it out but the documentation is not the easiest to follow. A simple step by step linux to linux tunnel would be appreciated using docker. There is no complete example anywhere that I could find so far. I am basing a compose file on the vyos documentation mostly. Maybe I'll write one if I have time to figure it out.