can I apply for my Visa in Dublin, with a UK passport. If so what documents do I need?

Dear, you can possibly apply for it from there.
The required documents can be as follows:
1. your passport and copy of its data page
2. the application form and a recently-taken bareheaded color photo
3. your residence permit in there or valid entry permit to Ireland
4. JW201 form or JW202 form (original and copy)
5. Admission notice from a Chinese school (original and copy)