Merge pull request #1249 from deis/dockerfile-apt-get-fix

fix(Dockerfile): ensure `apt-get install` is prefixed by `update`

Author: mboersma

Dockerfile

@@ -2,18 +2,14 @@ FROM deis/base:latest
 MAINTAINER OpDemand <info@opdemand.com>
 
 # install required system packages
+# HACK: install git so we can install bacongobbler's fork of django-fsm
+# install openssh-client for temporary fleetctl wrapper
 RUN apt-get update && \
-    apt-get install -yq python-dev libpq-dev libyaml-dev
+    apt-get install -yq python-dev libpq-dev libyaml-dev git openssh-client
 
 # install recent pip
 RUN wget -qO- https://raw.githubusercontent.com/pypa/pip/1.5.5/contrib/get-pip.py | python -
 
-# HACK: install git so we can install bacongobbler's fork of django-fsm
-RUN apt-get install -yq git
-
-# install openssh-client for temporary fleetctl wrapper
-RUN apt-get install -yq openssh-client
-
 # add a deis user that has passwordless sudo (for now)
 RUN useradd deis --groups sudo --home-dir /app --shell /bin/bash
 RUN sed -i -e 's/%sudo\tALL=(ALL:ALL) ALL/%sudo\tALL=(ALL:ALL) NOPASSWD:ALL/' /etc/sudoers