My MedusaJS v2 app (in a Yarn 4 monorepo) enters a deployment loop on Railway where migrations and admin build complete successfully but then restart 3 times before failing. I've tried various approaches including combining all commands into a single script (medusa db:migrate && medusa build && medusa start) but Railway still appears to interpret this as a crash and retries the deployment

My build command under Nixpacks is: cd apps/backend && yarn install --immutable

And my start command is:
cd apps/backend && yarn predeploy && yarn start

with predeploy being: medusa db:migrate .

It is likely something on my end since everything fails every time but I can't figure out why.