chore(builder): bump Docker to 1.3.2

Author: carmstrong

builder/Dockerfile

@@ -21,7 +21,7 @@ RUN apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 36A1D7869245C8950F9
 RUN apt-get update && apt-get install -yq \
     openssh-server git \
     aufs-tools iptables lxc \
-    lxc-docker-1.3.0
+    lxc-docker-1.3.2
 
 # install jq for parsing json
 RUN curl http://stedolan.github.io/jq/download/linux64/jq > /usr/bin/jq && chmod 755 /usr/bin/jq