Following the two articles, Configure ASP.NET Core to work with proxy servers and load balancers and Host ASP.NET Core on Linux with Nginx, in Microsoft Docs, I created a demo application using Docker Compose, which orchestrates an Nginx reverse proxy server and an ASP.NET Core Web API app. The following screen recording shows the demo app.

docker-compose build
docker-compose up --scale api=4 --build
docker-compose up

On Windows, if you have Git for Windows installed, then you can use the openssl command directly. Otherwise, the official page: OpenSSL.Wiki: Binaries contains useful URLs for downloading and installation guides.

openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout localhost.key -out localhost.crt -passin pass:YourSecurePassword

This command will generate two files: localhost.crt and localhost.key.

Feel free to use the code in this repository as it is under MIT license.