How do I launch nextjs app with https in production?

I am writing a nextjs application. I need to launch it with https because the crypto module requires a secureContext. I have nginx setup with https to proxy requests to the nextjs app as https.

I have tried adding --experimental-https in my packages.json to the next start, but this gives the error:

error: unknown option '--experimental-https'

This flag only seems to work in dev mode.

As long as your webserver handles https there is no need to make any next js modification to support it. As the error states, there is no --experimental-https option for next start