$OUTPUT_KEYBOARD=true

src/main.go

@@ -12,6 +12,8 @@ import (
 func Main(ctx context.Context) error {
 	reader := input.New()
 	writer := output.New()
+	defer writer.Close()
+
 	interval := time.Millisecond * 50
 	if intervalS, ok := os.LookupEnv("MAIN_INTERVAL_DURATION"); !ok {
 	} else if v, err := time.ParseDuration(intervalS); err != nil {