Make sure when we publish, we're always publishing the base image tag too

push-rubies.sh

@@ -4,6 +4,8 @@ set -x
 
 source ./rubies
 
+docker push ${IMAGE_TAG}:latest
+
 for RUBY in "${RUBIES[@]}"; do
     echo "> Pushing ${IMAGE_TAG}:${RUBY}"
     docker push ${IMAGE_TAG}:${RUBY}