Update golang image to 1.7.4

vdemeester · vdemeester · commit 60df5e27b80e · 2016-12-26T11:05:19.000+01:00
Signed-off-by: Vincent Demeester &lt;vincent@sbr.pm&gt;
diff --git a/Dockerfile b/Dockerfile
@@ -1,5 +1,5 @@
 # This file describes the standard way to build libcompose, using docker
-FROM golang:1.7.1
+FROM golang:1.7.4
 
 
 # virtualenv is necessary to run acceptance tests
