refactor(controller): optimize docker build layers

Author: Matthew Fisher

controller/Dockerfile

@@ -34,6 +34,10 @@ RUN pip install boto==2.23.0 \
 # install openssh-client for temporary fleetctl wrapper
 RUN apt-get install -yq openssh-client
 
+# install latest etcdctl including no-sync options
+RUN wget -q https://s3-us-west-2.amazonaws.com/deis/etcdctl.no-sync -O /usr/local/bin/etcdctl
+RUN chmod +x /usr/local/bin/etcdctl
+
 # clone the project into /app
 ADD . /app
 
@@ -54,10 +58,6 @@ RUN mkdir -p /templates && chown -R deis:deis /templates
 # create directory for logs
 RUN mkdir -p /var/log/deis && chown -R deis:deis /var/log/deis
 
-# install latest etcdctl including no-sync options
-RUN wget -q https://s3-us-west-2.amazonaws.com/deis/etcdctl.no-sync -O /usr/local/bin/etcdctl
-RUN chmod +x /usr/local/bin/etcdctl
-
 # define the execution environment
 WORKDIR /app
 CMD ["/app/bin/boot"]