diff --git a/server/config/config.go b/server/config/config.go
index 5d359e3..a448298 100644
--- a/server/config/config.go
+++ b/server/config/config.go
@@ -8,6 +8,7 @@ type Config struct {
 	HTTPAddr      string
 	MQTTBroker    string
 	MQTTTopicBase string
+	DashboardDir  string // optionnel : sert le dashboard en dev sans Nginx
 }
 
 func Load() Config {
@@ -17,6 +18,7 @@ func Load() Config {
 		HTTPAddr:      getEnv("HTTP_ADDR", "0.0.0.0:8080"),
 		MQTTBroker:    getEnv("MQTT_BROKER", "tcp://10.0.0.3:1883"),
 		MQTTTopicBase: getEnv("MQTT_TOPIC_BASE", "nanometrics/agents"),
+		DashboardDir:  getEnv("DASHBOARD_DIR", ""),
 	}
 }
 
diff --git a/server/main.go b/server/main.go
index e489177..729f414 100644
--- a/server/main.go
+++ b/server/main.go
@@ -116,6 +116,11 @@ func main() {
 	})
 	mux.HandleFunc("/api/config", handlers.ServerConfigHandler(database))
 
+	if cfg.DashboardDir != "" {
+		log.Printf("[http] dashboard servi depuis %s", cfg.DashboardDir)
+		mux.Handle("/", http.FileServer(http.Dir(cfg.DashboardDir)))
+	}
+
 	log.Printf("[http] écoute sur %s", cfg.HTTPAddr)
 	log.Fatal(http.ListenAndServe(cfg.HTTPAddr, mux))
 }