Automatic static optimisation on custom server

[eltonjothi]

Hello guys,
I am using https://nextjs.org/docs/advanced-features/custom-server with Express proxied through nginx mostly because of custom routing.
when i build and start the server, i am able to view the page on http://localhost:3000
but when i deploy it to the cloud, i am getting error 500 on static pages.
is there anyway i could use Automatic static optimisation with custom server.

Thank you