Implementing nginx reverse proxy in front of appwrite.

Hi, I have a appwrite instance on a server until now the appwrite was the only thing on that server. So I set it up with the default ports of 80 and 443. But now I am going to host a api and a nextjs website on that same server as well. Since appwrite is already configured to run on the default ports how can I map different ports for appwrite in the proxy and use it. Even the SSL port 443. Nginx will use both port 80 and 443 since I also need port 443 to handle all for the api and website.