Configure railway via code

[fabiante]

I have set up a small demo deployment (#40) which could be configured via code: https://docs.railway.app/deploy/config-as-code

This would allow the application to be simpler to re-deploy.

This is the current configuration:

{
  "$schema": "https://railway.app/railway.schema.json",
  "build": {
    "builder": "DOCKERFILE",
    "nixpacksPlan": {
      "repo": "fabiante/persurl"
    },
    "dockerfilePath": "Dockerfile"
  },
  "deploy": {
    "numReplicas": 1,
    "healthcheckPath": "/s/health",
    "restartPolicyType": "ON_FAILURE",
    "restartPolicyMaxRetries": 10
  }
}