Opening bottles on Shabbath

Question

I read a previous post on this. What if it is your practice (as it is mine for environmental reasons) to reuse bottles for other purposes? I routinely do this with oil, sometimes water, sometimes liquor, occasionally wine bottles. I always open anything unopened before Shabbath. Should I continue doing so?Do I have to have the intention not to reuse a particular bottle to open it on Shabbath? Thanks.