diff --git a/Dockerfile b/Dockerfile
index 381cc92..3c4d915 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,18 +1,18 @@
-ARG VERSION
-
 FROM ubuntu:18.04
 LABEL maintainer="Bill Ballou <bill@bballou.com>"
 
-WORKDIR /
+ARG VERSION
 
-RUN git clone -b $VERSION https://github.com/spesmilo/electrumx.git
+WORKDIR /
 
 RUN apt-get update
 
-RUN apt-get -y install python3.7 python3-pip librocksdb-dev libsnappy-dev libbz2-dev libz-dev liblz4-dev
+RUN apt-get -y install git python3.7 python3-pip librocksdb-dev libsnappy-dev libbz2-dev libz-dev liblz4-dev
 
 RUN pip3 install aiohttp pylru python-rocksdb
 
+RUN git clone -b $VERSION https://github.com/spesmilo/electrumx.git
+
 RUN cd electrumx
 
 RUN python3 setup.py install