[JaggedNZ]

I'd suggest you figure out how to source or render your map tiles from somewhere else before you get a nastygram from the big G.

I have not used it in many many years but I'd point you towards https://mapserver.org/ At one point I was one of many responsible for rending cache tile sets for all of NZ to 1:500. Sadly the whole system was scraped for a propriety solution mostly due to front-end issues, that funnily enough the propriety solution only multiplied.