I'm not talking about sleep/serverless. I'm talking about the ability to specify that a service/deployment has 0 replicas.

Use case:

• A one-time slow/sensitive DB migration during which we'd like to prevent background workers from writing to the DB.
• In my case, all DB migrations are carried out in the deploy step because of Railway's/app's limitations.
• During this slow DB migration, we'd like to scale down all workers that are constantly writing to the DB to avoid locks and inconsistencies.