fix build of flex by using correct ubuntu

diff --git a/Dockerfile b/Dockerfile
index 859563c236331b7efeb3ab210489fbef86175a76..1cc664bf99d6f1dc80a8b1bf657a8cd111b29ca2 100644 (file)
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:15.04
+FROM ubuntu:15.10
 MAINTAINER Alex Cornejo <acornejo@gmail.com>
 
 # to prevent dialog warnings