diff --git a/Dockerfile b/Dockerfile
index 94eb292..8fa2ead 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -20,7 +20,7 @@ RUN sed -i '/en_US.UTF-8/s/^# //g' /etc/locale.gen \
 RUN apt install python3-pip -y
 
 # clone repo
-RUN git clone https://github.com/netbox-community/netbox.git /opt/netbox
+RUN git clone -b master --depth 1 https://github.com/netbox-community/netbox.git /opt/netbox
 
 # change working dir to repo
 WORKDIR /opt/netbox