Rewrite local service's static url to subpath

[pkzxs123 (重八 朱)]

I have a local service. I want use Caddy to route to it by a path. Here is my config

placeholder.suffix {
    tls ./fullchain.pem ./privkey.pem
    handle_path /mypath* {
        rewrite * /{uri}
        reverse_proxy localhost:3000 {
            header_up X-Real-IP {remote}
            header_up X-Forwarded-Proto {scheme}
        }
    }
}

This works well, but this local service use some static url to obtain assets. For example, it will request file from placeholder.suffix/static/some.js. Then, this fails. Is there a way to rewrite this request to placeholder.suffix/mypath/static/some.js, therefore it could correctly goto local service? Thanks!

[matt (Matt Holt)]

Check out this article:

The "subfolder problem", OR, "why can't I reverse proxy my app into a subfolder?"

Have you ever tried to reverse proxy an app into its own little subfolder of your domain name? Makes things neat, doesn’t it? Using example.com/foo/ for one app, example.com/bar/ for another. If you’re coming here from one of the selfhosted communities, you might be thinking along the lines of example.com/sonarr/, example.com/radarr/ etc. Chances are, you’ve tried some configuration along these lines: example.com { redir /sonarr /sonarr/ handle_path /sonarr/* { reverse_proxy localhost…

Either the app has to support being served out of a subfolder (WordPress does, for example) or you have to do some intense response manipulation.