I've got railway setup to create backend preview deployments for new pull requests on each new branch.
I want to automatically also deploy an instance of my frontend that points to this backend preview branch so that I can automatically have a fullstack QA environment for every backend preview branch.
I could deploy the frontend-preview on Vercel or on Railway, but I need to sync the ENV variable for each preview-backend-url to a corresponding frontend deployment environment.
Is this possible?