Update all of the golang images to explicitly request golang 1.9
--- a/ChangeLog Mon Sep 25 21:01:59 2017 -0500
+++ b/ChangeLog Mon Sep 25 21:07:38 2017 -0500
@@ -1,6 +1,7 @@
* Added new task type "extend". (Eric Fritz) (Fixed #124)
* Added the ability to expand variables into lists. (Eric Fritz)
+ * Updated all of the golang Docker images to 1.9. * Added environment mapping support to the login and logout tasks.
--- a/images/go-build-alpine/Dockerfile Mon Sep 25 21:01:59 2017 -0500
+++ b/images/go-build-alpine/Dockerfile Mon Sep 25 21:07:38 2017 -0500
@@ -1,4 +1,4 @@
--- a/images/go-build/Dockerfile Mon Sep 25 21:01:59 2017 -0500
+++ b/images/go-build/Dockerfile Mon Sep 25 21:07:38 2017 -0500
@@ -1,4 +1,4 @@
--- a/images/go-test/Dockerfile Mon Sep 25 21:01:59 2017 -0500
+++ b/images/go-test/Dockerfile Mon Sep 25 21:07:38 2017 -0500
@@ -1,4 +1,4 @@
--- a/images/go-vet/Dockerfile Mon Sep 25 21:01:59 2017 -0500
+++ b/images/go-vet/Dockerfile Mon Sep 25 21:07:38 2017 -0500
@@ -1,4 +1,4 @@