Remove heroku/railway configuration

No one here uses this anymore so no one maintains it.

INSTALL.md

@@ -26,11 +26,12 @@ You can find the latest OSEM releases on our [release page](https://github.com/o
 
 ## Deploy to the cloud
 
-The easiest way to deploy OSEM is to use one of the many platform as a service providers that support ruby on rails. We have prepared OSEM to be used with [heroku](https://heroku.com). So if you have an account there, you can deploy OSEM by pressing this button:
+The easiest way to deploy OSEM is to use one of the many platform as a service (PaaS) providers that support Ruby on Rails.
+There are too many to list, here are a few we have seen OSEM deployed to:
 
-<a href="https://heroku.com/deploy?template=https://github.com/openSUSE/osem/tree/v1.0">
+- https://heroku.com
-  <img src="https://www.herokucdn.com/deploy/button.svg" alt="Deploy">
+- https://render.com
-</a>
+- https://fly.io
 
 ## Deploy to your own server
 

app.json

@@ -1,37 +0,0 @@
-{
-  "name": "osem",
-  "description": "Open Source Event Manager",
-  "repository": "https://github.com/openSUSE/osem",
-  "env": {
-    "CLOUDINARY_URL": {
-      "description": "Create a https://cloudinary.com account and set the cloud url here. It starts with cloudinary://",
-      "required": false
-    },
-    "SECRET_KEY_BASE": {
-      "description": "A key to verify sessions. At least 40 characters. For instance: https://www.randomlists.com/string?base=16&length=64&qty=1",
-      "generator": "secret"
-    },
-    "NOKOGIRI_USE_SYSTEM_LIBRARIES": "1",
-    "RAILS_ENV": "production",
-    "RACK_ENV": "production"
-  },
-  "scripts": {
-    "postdeploy": "bundle exec rake db:schema:load db:seed"
-  },
-  "formation": {
-    "web": {
-      "quantity": 1
-    },
-    "worker": {
-      "quantity": 1
-    }
-  },
-  "addons": [
-    {
-      "plan": "heroku-postgresql"
-    },
-    {
-      "plan": "sendgrid"
-    }
-  ]
-}

railway.json

@@ -1,11 +0,0 @@
-{
-  "$schema": "https://railway.app/railway.schema.json",
-  "build": {
-    "builder": "nixpacks"
-  },
-  "deploy": {
-    "startCommand": "foreman start -p 3000",
-    "restartPolicyType": "ON_FAILURE",
-    "restartPolicyMaxRetries": 2
-  }
-}