make configurable via dotenv like in real life

[github-actions]

Line: 46

MADstack/src/main.rs

Lines 43 to 53 in 12cd562

	.route("/echoes", post(echoes::create))
	.with_state(pool);
	// TODO: make configurable via dotenv like in real life
	let listener = tokio::net::TcpListener::bind("0.0.0.0:3000")
	.await
	.expect("failed to bind to 0.0.0.0:3000");
	axum::serve(listener, app)
	.await
	.expect("failed axum::serve...");