As far as I see, wikijs can only be hosted at domain root (http://wiki.example.com/). Would be cool if it could also be hosted at a subpath, like http://example.com/wiki/
There's no plan to allow for subfolder installations. Use a subdomain instead.
@Nicolas Giard: any reason for that? It might be a blocker for those who need it..
@Lars Solberg: Because it adds unnecessary complexity to the app. From path parsing, path permissions, links within content that must be rewritten + again if the subfolder changes, all assets must be prefixed, potential cookie collision with other apps to the sheer amount of extra github support tickets because of incorrect configuration in Wiki.js or their reverse-proxy.
Most support tickets for v1 were concerning the site url not being setup correctly, which would necessary for subfolder install. Something I'd rather not repeat with v2.
Unless someone can give me a really compelling reason against using subdomains, sub-folder installation will not be implemented for the foreseeable future.