Reorder Dockerfile so future version upgrades are easier.

Dockerfile

@@ -3,12 +3,20 @@
 FROM resin/rpi-raspbian:jessie
 MAINTAINER Jordan Crawford <[email protected]>
 
+# Install required packages.
+RUN apt-get update; apt-get install wget python python-twisted python-openssl python-setuptools intltool python-xdg python-chardet geoip-database python-libtorrent python-notify python-pygame python-glade2 librsvg2-common xdg-utils python-mako -y
+
+# Setup a user.
+RUN adduser --system -u 1000 deluge
+
+# Clean up.
+RUN apt-get clean
+RUN rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+
 # Deluge version.
 ARG DELUGE_VERSION=1.3.13
 
-# Install deluge required packages.
-RUN apt-get update; apt-get install wget python python-twisted python-openssl python-setuptools intltool python-xdg python-chardet geoip-database python-libtorrent python-notify python-pygame python-glade2 librsvg2-common xdg-utils python-mako -y
-
+# Install Deluge.
 WORKDIR /
 RUN wget http://download.deluge-torrent.org/source/deluge-${DELUGE_VERSION}.tar.gz
 RUN tar -zxvf deluge-${DELUGE_VERSION}.tar.gz
@@ -18,13 +26,6 @@ RUN cd deluge-${DELUGE_VERSION}; python setup.py build; python setup.py install
 # Expose the deluge control port and the web UI port.
 EXPOSE 58846 8112
 
-# Setup a user.
-RUN adduser --system -u 1000 deluge
-
-# Clean up.
-RUN apt-get clean
-RUN rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
-
 # Setup volumes.
 VOLUME /config
 VOLUME /data