Dockerize

.env.example

@@ -0,0 +1,3 @@
+ADDRESS=0.0.0.0
+PORT=3000
+ENABLE_CORS=true

.gitignore

@@ -1 +1,2 @@
 /target
+.env

Cargo.lock

@@ -228,6 +228,12 @@ dependencies = [
  "crypto-common",
 ]
 
+[[package]]
+name = "dotenv"
+version = "0.15.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "77c90badedccf4105eca100756a0b1289e191f6fcbdadd3cee1d2f614f97da8f"
+
 [[package]]
 name = "engineioxide"
 version = "0.13.1"
@@ -610,6 +616,7 @@ version = "0.1.0"
 dependencies = [
  "axum",
  "chrono",
+ "dotenv",
  "serde",
  "serde_json",
  "socketioxide",

Cargo.toml

@@ -8,6 +8,7 @@ edition = "2021"
 [dependencies]
 axum = "0.7.5"
 chrono = "0.4.38"
+dotenv = "0.15.0"
 serde = { version = "1.0.201", features = ["derive"] }
 serde_json = "1.0.117"
 socketioxide = "0.13.1"

Dockerfile

@@ -0,0 +1,19 @@
+FROM rust:1.76 as builder
+WORKDIR /app
+
+COPY Cargo.toml Cargo.lock ./
+
+COPY src ./src
+
+RUN cargo build --release
+
+FROM rust:1.76
+WORKDIR /app
+
+COPY --from=builder /app/target/release/painter .
+COPY painter-js/dist ./dist
+COPY .env .env
+
+EXPOSE 3000
+
+CMD ["./painter"]

src/main.rs

@@ -71,6 +71,7 @@ async fn on_connect(socket: SocketRef, state: Arc<AppState>) {
 
 #[tokio::main]
 async fn main() -> Result<(), Box<dyn std::error::Error>> {
+    dotenv::dotenv().ok();
     tracing::subscriber::set_global_default(FmtSubscriber::new())?;
     let (layer, io) = SocketIo::new_layer();
 
@@ -85,24 +86,38 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
         tokio::spawn(on_connect(socket, app_state_for_ns.clone()));
     });
 
-    let cors = CorsLayer::new()
+    let address = std::env::var("ADDRESS").unwrap_or_else(|_| "0.0.0.0".to_string());
-        .allow_origin(Any)
+    let port: u16 = std::env::var("PORT")
-        .allow_methods(Any)
+        .unwrap_or_else(|_| "3000".to_string())
-        .allow_headers(Any);
+        .parse()
+        .expect("Invalid port");
+    let enable_cors = std::env::var("ENABLE_CORS").unwrap_or_else(|_| "true".to_string()) == "true";
+
+    let cors = if enable_cors {
+        Some(
+            CorsLayer::new()
+                .allow_origin(Any)
+                .allow_methods(Any)
+                .allow_headers(Any),
+        )
+    } else {
+        None
+    };
 
     let app = Router::new()
-        .fallback_service(ServeDir::new("painter-js/dist"))
+        .fallback_service(ServeDir::new("dist"))
-        .layer(layer)
+        .layer(layer);
-        .layer(cors);
 
-    info!("Starting server");
+    let app = if let Some(cors) = cors {
+        app.layer(cors)
+    } else {
+        app
+    };
 
-    let listener = tokio::net::TcpListener::bind("127.0.0.1:3000").await?;
+    let server_address = format!("{}:{}", address, port);
-    axum::serve(
+    info!("Starting server on {}", server_address);
-        listener,
+    let listener = tokio::net::TcpListener::bind(server_address).await?;
-        app.into_make_service_with_connect_info::<SocketAddr>(),
+    axum::serve(listener, app.into_make_service()).await?;
-    )
-    .await?;
 
     Ok(())
 }