Add _REGION substitute to readme cloud build section

Signed-off-by: KeisukeYamashita <19yamashita15@gmail.com>
mercari · Jan 20, 2022 · 8dc30e8 · 8dc30e8
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commit 8dc30e8
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diff --git a/README.md b/README.md
@@ -396,6 +396,7 @@ GitHub private repositories require the `repo` and `write:discussion` permission
   - `BUILD_ID`
   - `PROJECT_ID`
   - `_PR_NUMBER`
+  - `_REGION`
 - Recommended trigger events
   - `terraform plan`: Pull request
   - `terraform apply`: Push to branch