docs: Add a new build phase SETUPBUILD for timing information

Google APIs · copybara-github · commit 760b5d8bfd66 · 2021-07-28T09:03:18.000-07:00
PiperOrigin-RevId: 387362210
diff --git a/google/devtools/cloudbuild/v1/cloudbuild.proto b/google/devtools/cloudbuild/v1/cloudbuild.proto
@@ -854,9 +854,10 @@ message Build {
   // Output only. Stores timing information for phases of the build. Valid keys
   // are:
   //
-  // * BUILD: time to execute all build steps
+  // * BUILD: time to execute all build steps.
   // * PUSH: time to push all specified images.
   // * FETCHSOURCE: time to fetch source.
+  // * SETUPBUILD: time to set up build.
   //
   // If the build does not specify source or images,
   // these keys will not be included.
