The trickier part here his connecting your domain to your raspberry pi and allowing the big internet to access it. You have a few options:
Set up dynamic DNS to direct your domain name to your (presumably dynamic) home IP address. Assign the rpi a static IP address on your home network. Forward ports 80 and 443 to that address. The world knows your home IP address, and you’re dependent on your router for security. No spam or DDOS protection.
Use a service such as cloudflare tunnel. You’re dependent on cloudflare or whoever, but it’s an easier config, you don’t need to open ports in your firewall, and your home IP address is not public. (I recommend this option.)
Either way, don’t forget to set up HTTPS. If you aren’t dead-set on using nginx, caddyserver does this entirely automatically.
The trickier part here his connecting your domain to your raspberry pi and allowing the big internet to access it. You have a few options:
Either way, don’t forget to set up HTTPS. If you aren’t dead-set on using nginx, caddyserver does this entirely automatically.