Update to 2.1.12 (close #39)

Author: beevelop

Dockerfile

@@ -2,6 +2,6 @@ FROM beevelop/cordova
 
 MAINTAINER Maik Hummel <m@ikhummel.com>
 
-ENV IONIC_VERSION 2.1.8
+ENV IONIC_VERSION 2.1.12
 
 RUN npm i -g --unsafe-perm ionic@${IONIC_VERSION}