docker: Use Ubuntu:trusty instead Ubuntu:14.04 because the last vestion of the LTS is 14.04.01

c5246f18 · Ernesto Rodriguez Ortiz · 3efa2647 · c5246f18
Commit c5246f18 authored Jan 08, 2015 by Ernesto Rodriguez Ortiz
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,7 +2,7 @@
 #
 # VERSION       0.2
 # DOCKER-VERSION        0.4
-FROM    ubuntu:14.04
+FROM    ubuntu:trusty
 MAINTAINER Ernesto Rodriguez Ortiz <ernesto.rodriguezortiz@savoirfairelinux.com>

 # Update software source