Hopefully fix in memory sqlite db issue?

src/main.rs

@@ -90,7 +90,7 @@ fn rocket() -> _ {
     let args = Args::parse();
 
     let db_url = if args.demo {
-        "sqlite::memory:".to_string()
+        "file:memdb1?mode=memory&cache=shared".to_string()
     } else {
         let database = args
             .database