Auto-retry failed CI builds once

Summary: As title

Differential Revision: D60697701

Author: gtwang01

.github/workflows/retry_build.yml

@@ -0,0 +1,30 @@
+name: Retry Build
+on:
+  workflow_run:
+    workflows: [Build]
+    types:
+      - completed
+jobs:
+  on-success:
+    runs-on: ubuntu-latest
+    if: ${{ github.event.workflow_run.conclusion == 'success' }}
+    steps:
+      - run: echo 'The triggering workflow passed. No action will be taken.'
+  on-failure:
+    runs-on: ubuntu-latest
+    if: ${{ github.event.workflow_run.conclusion == 'failure' }}
+    steps:
+      - run: |
+        echo 'The triggering workflow failed. Retrying once.'
+
+        # get run id and rerun
+        RUNID=$(gh api repos/$OWNER/$REPO/commits/$COMMIT_SHA/check-runs |
+        jq -r '.check_runs[] |
+        select(.name == "Build") |
+        .html_url |
+        capture("/runs/(?<number>[0-9]+)/job") |
+        .number' |
+        sed 's/"//g' |
+        head -n 1)
+
+        gh run rerun $RUNID --failed