fix: accept dotenv failure

src/main.rs

@@ -146,7 +146,10 @@ enum SourceType {
 #[tokio::main]
 async fn main() {
     let app: App = argh::from_env();
-    dotenvy::dotenv().expect("Could not load dot env file");
+    match dotenvy::dotenv() {
+        Ok(_) => eprintln!("Loaded env vars from .env"),
+        Err(err) => eprintln!("WARNING: loading .env failed {:?}", err),
+    }
     let config: Config = envy::from_env().expect("Failed to load env vars");
 
     if app.env_info {