Merge pull request #733 from opdemand/fix-router-build

fix(router): docker build fails when apt archive is stale

Author: carmstrong

router/Dockerfile

@@ -2,7 +2,8 @@ FROM deis/base
 MAINTAINER Gabriel Monroy <gabriel@opdemand.com>
 
 # install nginx
-RUN apt-get install -yq python-software-properties
+RUN apt-get update && \
+    apt-get install -yq python-software-properties
 RUN add-apt-repository ppa:chris-lea/redis-server -y
 RUN add-apt-repository ppa:nginx/stable -y
 RUN apt-get update