Revert "database source fix v2"

This reverts commit 886b3a4160.

prisma.config.ts

@@ -1,6 +1,7 @@
 // prisma.config.ts
 
-import { defineConfig } from "prisma/config";
+import "dotenv/config";
+import { defineConfig, env } from "prisma/config";
 
 export default defineConfig({
   schema: "prisma/schema.prisma",
@@ -8,6 +9,6 @@ export default defineConfig({
     path: "prisma/migrations",
   },
   datasource: {
-    url: "file:/app/data/kullaberg.db",
+    url: process.env.DATABASE_URL,
   },
 });