diff --git a/Dockerfile b/Dockerfile
index 62a5bf4..2cc6c5d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,4 +3,4 @@ MAINTAINER <ali.khan@uwo.ca>
 
 COPY . .
 
-RUN apt install -y git && pip install --no-cache-dir .
+RUN apt-get update && apt-get install -y --no-install-recommends git && apt-get purge -y --auto-remove && rm -rf /var/lib/apt/lists/* && pip install --no-cache-dir .