The file server supports folders

[Avey777]

https://static.amiemall.com/

[allan2]

Duplicate of #69

[Avey777]

副本 #69

I think the demands of these two are not the same. The current issue's demand is for static file services provided by Caddy, which can view folder directories through URLs

This one https://static.amiemall.com/
It is a static file service launched by Caddy, and we hope that River can also provide such functionality