hello!

I'm changing one of my company's services. We have a dockerfile that needs to access a directory outside of the service dir to copy in some files. Instead of running the dockerfile in the service directory, I would like to run this command from the root dir.

however when i set this as the build command in the service settings, it fails because Docker is not installed. There is no nixpack or railpack that has docker installed by default. My understanding is that the only way to use a Dockerfile in Railway is if the Dockerfile is in the root dir, which in this case it is no longer.

I would love to be able to specify that Docker is a dependency prior to the build step. Or perhaps have a Docker nixpack option available instead of just specific languages.

As a workaround, I'm planning to write a script to install docker on the machine and THEN run the Dockerfile. But this is a hack and I'd love a more direct option built into railway.