Make version shorter

Author: AchoArnold

api/cloudbuild.yaml

@@ -7,7 +7,7 @@ steps:
       - "--destination=us.gcr.io/$PROJECT_ID/$_SERVICE_NAME:latest"
       - "--dockerfile=Dockerfile"
       - "--context=."
-      - "--build-arg=GIT_COMMIT=$COMMIT_SHA"
+      - "--build-arg=GIT_COMMIT=$SHORT_SHA"
       - "--snapshotMode=time"
 
   - id: "Deploy to cloud run"