diff --git a/docker/Dockerfile b/docker/Dockerfile
index ba7b2f9..8dec6c6 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -10,6 +10,7 @@ RUN apt-get update && apt-get install -y \
     wget \
     git \
     vim \
+    tree \
     build-essential \
     software-properties-common \
     apt-transport-https \