diff --git a/pyspark/Dockerfile b/pyspark/Dockerfile
index e6d5840..b328fc9 100644
--- a/pyspark/Dockerfile
+++ b/pyspark/Dockerfile
@@ -1,4 +1,6 @@
-FROM comp101/spark
+# Don't use the official jupyter/pyspark-notebook image because it's massive!
+FROM analytics/spark
+
 
 ARG NB_USER="pyspark"
 ARG NB_UID="1000"
@@ -31,8 +33,6 @@
     && ipython profile create \
     && echo "c.InteractiveShellApp.extensions.append('sparkmonitor.kernelextension')" >> $(ipython profile locate default)/ipython_kernel_config.py
 
-COPY pyspark_demo.ipynb /home/$NB_USER/work/pyspark_demo.ipynb
-
 # WORKDIR /home/$NB_USER/work
 WORKDIR /mnt/sparkdata