Hello,

The private network is indeed not available during build due to technical limitation on how the current build system works.

Best,
Brody

So, what would be the ideal way to bypass this while still making use of Next.js' SSG?

Preferably, I would not use the public database URL.

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Also, is there a plan to have private networks available during the build?

The way you could overcome it would be to do the page generations during runtime before starting the server, you can do this by moving the build command into the start command, make sure you are using a health check so that railway does not switch the new deployment into traffic before its ready to handle traffic.

And yes we do have plans to make the builder a part of the private network, but no ETA on that yet, sorry.

is there an example that I can follow to achieve this perhaps?

In your service settings, set the build command to something like echo skipping build and then set your start command to pnpm run build && pnpm run start

And then make sure to use a health check -

https://docs.railway.com/guides/healthchecks-and-restarts