Hosting wiki content outside of

I have a substantial content inside project wiki hosted on Now I would like to give public access to a broader audience and creating groups and giving access on will not fix my issue. I was thinking about hosting gollum on Heroku but I figured out this is not the best idea since gollum is targeting single user, locally available pages. I could process md wiki pages with some static generator like pelican and still host it on Heroku. Another option would be to actually use gitlab pages feature and create new project repo from wiki one. There are number of other possibilities and my question is did anyone already found a good way to solve such case?