Update Dockerfile to 0.3.7

Author: jwilder

Dockerfile

@@ -1,7 +1,7 @@
 FROM debian:wheezy
 MAINTAINER Jason Wilder <jwilder@litl.com>
 
-ENV VERSION 0.3.6
+ENV VERSION 0.3.7
 ENV DOCKER_HOST unix:///tmp/docker.sock
 
 RUN apt-get update && apt-get install -y curl && curl -o docker-gen-linux-amd64-$VERSION.tar.gz -L https://github.com/jwilder/docker-gen/releases/download/$VERSION/docker-gen-linux-amd64-$VERSION.tar.gz && apt-get remove -y curl && apt-get -y clean