add fly volume and set DATABASE_URL

Author: Fmar

fly.toml

@@ -10,6 +10,7 @@ primary_region = 'fra'
 
 [env]
   BASE_URL = 'https://spark-nwc.fly.dev'
+  DATABASE_URL = 'file:/data/database.db'
 
 [http_service]
   internal_port = 3001
@@ -26,6 +27,10 @@ primary_region = 'fra'
     method = 'GET'
     path = '/ping'
 
+[mounts]
+  source = "data"
+  destination = "/data"
+
 [[vm]]
   memory = '1gb'
   cpu_kind = 'shared'