Ask someone who speaks French to say 'Dormeiul' and I think you'll find that it is a mix of dor-may and dor-moy with eu sound in there.
Well put. No, it's not completely a "MOY", because that's not how French is. There's a soft L (a <<L mouillÃ©>>) at the end, and, well, it's one of those complicated French words. Your mouth opens and does funny things. Similar ending sounds were represented throughout the centuries with the "-ilh" (as in Jean Anouilh). But manton, talk to a Frog in the trade and ask him or her to say it. However, if you asked a French person how to say "DORMEIUL" they would look at you funny. It's Dormeuil, dammit. The "ei" sound in French is pronounced a bit like "AY" so yes, if a French person was asked to pronounce that misspelling, they might croak out something like that. Of course, my favorite (pidgin) French saying is, ALLEZ CUISINE.............
which yes, means nothing coherent but Fuji Television made me say it.