Fix container builder command line.

The gcloud commands have moved.

Bug: skia:
Change-Id: I2af39ccfe0efe121766b7b0e2fe3cdb8cd8c4012
Reviewed-on: https://skia-review.googlesource.com/154040
Auto-Submit: Joe Gregorio <jcgregorio@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
diff --git a/docker/cloudbuild.yaml b/docker/cloudbuild.yaml
index 58dd8ca..fa9156f 100644
--- a/docker/cloudbuild.yaml
+++ b/docker/cloudbuild.yaml
@@ -4,7 +4,7 @@
 steps:
   # To test locally, first uncomment the last two lines of this comment block, then submit with:
   #
-  #    gcloud container builds submit --config cloudbuild.yaml --no-source --substitutions=COMMIT_SHA=e01683e81de03caf5a2f9a23a5ae9f644908b56f
+  #    gcloud builds submit --config cloudbuild.yaml --no-source --substitutions=COMMIT_SHA=b2acf0a93927a57cc1fa9323839e788379ae3366
   #
   # Where COMMIT_SHA is updated to the last commit into Skia.
   #