Vaultwarden behind Apache with prefix/subpath

I’m struggling with placing Vaultwarden behind an Apache reverse-proxy, with a prefix or a subpath, like https://domain.tld/vwn/.

How is Vaultwarden supposed to be configured to make it’s webserver respond with the prefix/subpath instead?

Thanks,
mingalsuo

See Proxy examples · dani-garcia/vaultwarden Wiki · GitHub