Add dotenv

backend/src/main.rs

@@ -27,6 +27,8 @@ use crate::repo::Repo;
 
 #[tokio::main]
 async fn main() -> Result<()> {
+    dotenvy::dotenv().ok();
+
     tracing_subscriber::registry()
         .with(tracing_subscriber::EnvFilter::from_default_env())
         .with(tracing_subscriber::fmt::layer())