My usecase is that my node app needs to install a package from a private github registry.
What I would normally expect is to be able to pass a .npmrc (like Vercel) or a token from the env variables and have the usual installation during the build step. As per my understanding this is not currently supported by railway.

So my question is, what would be the best workaround in this case? I'm not using a custom dockerfile for the build.