For that purpose you need to install a reverse proxy. In the Odoo installation/deployment documentation, you can read how to set up nginx as a reverse proxy. If this is too complicated, as it is for me, there is an much easier alternative called Caddy (www.caddyserver.com).

You can read about how to set up Caddy for Odoo here:

https://www.odoo.com/de_DE/forum/hilfe-1/automatic-ssl-easy-way-to-secure-your-odoo-website-domains-using-caddy-server-2-and-let-s-encrypt-certificates-176598