So, generate the rendered POD dynamically?

Sure, why not :) If you want to have absolute urls like  http://localhost:5000/mirror/integration/module/Acme::Foogenerating this stuff on demand makes sense to me:)

But I don't see why you can't have relative urls like  Acme::Foo so that when  http://localhost:5000/mirror/integration/module/Acme::Foo serves Acme::Foo, all the links that are relative and correct and then you don't need to know the prefix  http://localhost:5000/mirror/integration/module/ in advance