Secret File support for Blueprint
Many services, such as Prisma, require environment variables at build time. Being able to provide these such as DATABASE_URL within the render.yaml would prevent having to let the build first fail to supply it manually in the UI
Bumping this, a use case is building a Rails docker container, you need the master key and database url at build time, these need to be set up as secret mounts.
The only way to do this now is to set up the blueprint.yaml without these, run a preliminary failing build, and then add them, and build again.
So these would be like placeholder ENV vars, but placeholder secret files.
Donny Blaine Are you trying to run database migrations at build time?