diff --git a/Dockerfile b/Dockerfile
index 57b88d7..01cbd74 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -18,7 +18,8 @@ FROM base as build
 
 # Install packages needed to build node modules
 RUN apt-get update -qq && \
-    apt-get install -y python-is-python3 pkg-config build-essential 
+    apt-get install -y python-is-python3 pkg-config build-essential && \
+    apt-get clean && rm -rf /var/lib/apt/lists/*
 
 # Install node modules
 COPY --link package-lock.json package.json ./