Is there a way on Railway to have an environment that doesn't get deployed, but is just used as a template for ephemeral PR deployments? One of the components of my tech stack is a little complicated in that it can be run either as two separate containers where one of the containers can be scaled out or as one container with the restriction that it supports only one instance. I'd rather keep things simpler and lighter for development and only run the single-node version for PR branches, but I don't want to have to have an entire bonus deployment that won't be used just to serve as a template for the PR deployments.