Use the latest commit to generate docs (coder#432)

BrunoQuaresma · web-flow · commit 12e174f2e3e2 · 2021-06-24T07:03:56.000-07:00
diff --git a/.github/workflows/preview.yaml b/.github/workflows/preview.yaml
@@ -65,7 +65,7 @@ jobs:
           VERCEL_ORG_ID: team_tGkWfhEGGelkkqUUm9nXq17r
           VERCEL_PROJECT_ID: QmZRucMRh3GFk1817ZgXjRVuw5fhTspHPHKct3JNQDEPGd
           VERCEL_TOKEN: ${{ secrets.VERCEL_TOKEN }}
-          CODER_DOCS_MAIN_BRANCH: ${{ github.sha }}
+          CODER_DOCS_MAIN_BRANCH: ${{ github.event.pull_request.head.sha }}
 
       - name: Update Deployment
         # If we don't specify always, it won't run this check if failed.
