I don't know exactly how your collection looks like and in what the NI Web Server as it is fills in, but as for linux and serving http I have been positively impressed by this: https://github.com/illuminated-g/lv-http-server
In fact I did some preliminary evaluation of it some time ago, and I was planning to build on it for a project which has been delayed. If you look into, I'd be interested in hearing your opinion as well.