feat: add health check endpoint and update Docker Compose healthcheck configuration

backend/src/router.rs

@@ -1,4 +1,4 @@
-use axum::{middleware, routing::{delete, get, post, put}, Router};
+use axum::{http::StatusCode, middleware, routing::{delete, get, post, put}, Router};
 use sqlx::PgPool;
 use std::sync::Arc;
 use tower_http::{cors::CorsLayer, trace::TraceLayer};
@@ -34,6 +34,10 @@ pub struct AppState {
     pub config: Config,
 }
 
+async fn health_handler() -> StatusCode {
+    StatusCode::OK
+}
+
 /// Constrói o router Axum com todas as rotas e middlewares.
 pub fn build(db: PgPool, config: Config) -> Router {
     let db = Arc::new(db);
@@ -112,6 +116,7 @@ pub fn build(db: PgPool, config: Config) -> Router {
         .route_layer(middleware::from_fn_with_state(state.clone(), auth_middleware));
 
     Router::new()
+        .route("/health", get(health_handler))
         .nest("/api/v1", public_routes.merge(protected_routes))
         .with_state(state)
         .layer(TraceLayer::new_for_http())

docker-compose.yml

@@ -26,8 +26,14 @@ services:
     environment:
       DATABASE_URL: postgresql://${POSTGRES_USER}:${POSTGRES_PASSWORD}@db:5432/${POSTGRES_DB}
     ports:
-      - "${PORT:-8080}:8080"
+      - "${PORT:-8080}:${PORT:-8080}"
     depends_on:
       db:
         condition: service_healthy
+    healthcheck:
+      test: ["CMD-SHELL", "curl -f http://localhost:${PORT:-8080}/health || exit 1"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+      start_period: 10s