depending on how often you do it you could buy a little butane stove from bunnings. We changed to induction and i'm in love with it, even tho i thought I would hate it. But yeah, I use the little camp stove for stirfrys and charring vegetables.
You can't get a wok hot enough across its entire surface to do actual stir-fry using electric or induction heating. What you end up with is a pitiful boil, not a stir-fry.
Thankfully they aren't about to ban gas bottles and the problem is fairly easily solved.