feat: Update dockerfile

Dockerfile

@@ -4,6 +4,9 @@ FROM golang:1.21
 # Set destination for COPY
 WORKDIR /app
 
+# Install knot-dnsutils
+RUN apt-get update && apt-get install -y knot-dnsutils
+
 COPY main.go ./
 COPY go.mod ./
 COPY go.sum ./

main.go

@@ -23,10 +23,7 @@ func main() {
 	if err != nil {
 		// Try to load the .env.example file
 		fmt.Println("Error loading .env file, trying .env.example")
-		err = godotenv.Load(".env.example")
-		if err != nil {
-			log.Fatal("Error loading .env.example file")
-		}
+		godotenv.Load(".env.example")
 	}
 
 	// Start ticker
@@ -186,11 +183,8 @@ func startTicker() {
 	ticker := time.NewTicker(10 * time.Second)
 	defer ticker.Stop()
 
-	for {
-		select {
-		case <-ticker.C:
-			runBashScript()
-		}
+	for range ticker.C {
+		runBashScript()
 	}
 }