Either tailscale or cloudflare tunnels are the most adapted solution as other comments said.
For tailscale, as you already set it up, just make sure you have an exit node where your services are. I had to do a bit of tinkering to make sure that the ips were resolved : its just an argument to the tailscale command.
But if you dont want to use tailscale because its to complicated to your partner, then cloudlfare tunnels is the other way to go.
How it works is by creating a tunnel between your services and cloudlare, kind of how a vpn would work.
You usually use the cloudlfared CLI or directly throught Cloudflare’s website to configure the tunnel.
You should have a DNS imported to cloudflare by the way, because you have to do a binding such as : service.mydns.com -> myservice.local
Cloudlfare can resolve your local service and expose it to a public url.
Just so you know, cloudlfare tunnels are free for some of that usage, however cloudlfare has the keys for your ssl traffic, so they in theory could have a look at your requests.
Either tailscale or cloudflare tunnels are the most adapted solution as other comments said.
For tailscale, as you already set it up, just make sure you have an exit node where your services are. I had to do a bit of tinkering to make sure that the ips were resolved : its just an argument to the tailscale command.
But if you dont want to use tailscale because its to complicated to your partner, then cloudlfare tunnels is the other way to go.
How it works is by creating a tunnel between your services and cloudlare, kind of how a vpn would work. You usually use the cloudlfared CLI or directly throught Cloudflare’s website to configure the tunnel. You should have a DNS imported to cloudflare by the way, because you have to do a binding such as : service.mydns.com -> myservice.local Cloudlfare can resolve your local service and expose it to a public url.
Just so you know, cloudlfare tunnels are free for some of that usage, however cloudlfare has the keys for your ssl traffic, so they in theory could have a look at your requests.
best of luck for the setup !