Bound IP address to localhost

Hello,

I want to use Caddy as the reverse proxy and therefore Bitwarden must be bound to 127.0.0.1 with other ports than 80 and 443. For the selfhosted installation, what needs to be done in order to accomplish this?

Thank you in advance,
Rob

To be more precise, I still want to use the standard Linux installation but I am using Caddy as a webserver, and an IP address must be set there in the Caddy file that points to the Bitwarden installation.