External Swagger UI run on django Wagatil

Question

I have swagger UI built on Flask, which works fine. However I want to access the documentation from a Django Wagtail application. I would imagine there is a straight forward way to do this from the swagger.json.

I came across this but it's not too clear

I then went to documentation hoping it would be clear. However there is no clarity about how this works with my external link.

Any pointers how I can easily reference my Flask Swagger Docs will be helpful.