diff --git a/README.md b/README.md
index e9bad0f..1f62c0b 100644
--- a/README.md
+++ b/README.md
@@ -12,9 +12,10 @@ To do a build/push to our container registry, first create a token at https://gi
 Then, run:
 ```
 # finish commits and testing
-git tag "0.0.X"
-docker build -t git.agaric.com/agaric/deploycontainer:0.0.X
-docker tag git.agaric.com/agaric/deploycontainer:0.0.X git.agaric.com/agaric/deploycontainer:latest
+export TAG="0.0.X"
+git tag "${TAG}"
+docker build -t git.agaric.com/agaric/deploycontainer:${TAG} .
+docker tag git.agaric.com/agaric/deploycontainer:${TAG} git.agaric.com/agaric/deploycontainer:latest
 docker push git.agaric.com/agaric/deploycontainer:latest
 ```
 Need to verify pushing latest also includes the version...not sure