Load server information from .env file.

src/main.rs

@@ -1,12 +1,22 @@
+use std::env;
 use axum::{
     routing::{get, post},
     http::StatusCode,
     Json, Router,
 };
+use dotenv::dotenv;
 use serde::{Deserialize, Serialize};
 
 #[tokio::main]
 async fn main() {
+    dotenv().ok();
+
+    let server_address = env::var("SERVER_ADDRESS").expect("SERVER_ADDRESS is not set in .env file");
+    let server_port = env::var("SERVER_PORT").expect("SERVER_PORT is not set in .env file");
+    let database = env::var("DATABASE_URL").expect("DATABASE is not set in .env file");
+
+    let addr = format!("{}:{}", server_address, server_port);
+
     // initialize tracing
     tracing_subscriber::fmt::init();
 
@@ -18,7 +28,7 @@ async fn main() {
         .route("/users", post(create_user));
 
     // run our app with hyper, listening globally on port 3000
-    let listener = tokio::net::TcpListener::bind("0.0.0.0:9090").await.unwrap();
+    let listener = tokio::net::TcpListener::bind(addr).await.unwrap();
     axum::serve(listener, app).await.unwrap();
 }