Push docs to root instead of /preview (#1351)

## Description

Push docs to root instead of /preview

## Type of change

<!--- Please check the type of change your PR introduces: --->
- [ ] 🌻 Feature
- [ ] 🐛 Bugfix
- [ ] 🗺️ Documentation
- [ ] 🤖 Test
- [x] 💻 CI/Deployment
- [ ] 🐹 Trivial/Minor

## Issue(s)

<!-- Can reference multiple issues. Use one of the following "magic words" - "closes, fixes" to auto-close the Github issue. -->
* fixes https://github.com/alcionai/corso/issues/1327

## Test Plan

<!-- How will this be tested prior to merging.-->
- [x] 💪 Manual
- [ ] ⚡ Unit test
- [ ] 💚 E2E

.github/workflows/ci.yml

@@ -5,7 +5,7 @@ on:
     branches: [main]
   push:
     branches: [main]
-    tags: [ 'v*.*.*' ]
+    tags: ["v*.*.*"]
 
 permissions:
   # required to retrieve AWS credentials
@@ -20,7 +20,6 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
-
   # ----------------------------------------------------------------------------------------------------
   # --- Prechecks and Checkouts ------------------------------------------------------------------------
   # ----------------------------------------------------------------------------------------------------
@@ -227,8 +226,6 @@ jobs:
             echo "::set-output name=version::$(echo unreleased-$(git rev-parse --short HEAD))"
           fi
 
-
-
   Publish-Binary:
     needs: [Test-Suite, Linting, Docs-Linting, SetEnv]
     environment: ${{ needs.SetEnv.outputs.environment }}
@@ -297,13 +294,17 @@ jobs:
           CORSO_VERSION: ${{ needs.SetEnv.outputs.version }}
         run: |
           npm ci
-          CORSO_DOCS_BASEURL="/preview/" npm run build # TODO: update base url once finalized
+          npm run build
+
+      - name: Add rotbots.txt
+        if: github.ref == 'refs/heads/main'
+        run: |
+          printf 'User-agent: *\nDisallow: /' > build/robots.txt
 
       - name: Push docs
         if: startsWith(github.ref, 'refs/tags/') || github.ref == 'refs/heads/main'
         run: |
-          echo "$DOCS_BUCKET" | base64
-          aws s3 sync build "s3://${{ secrets.DOCS_S3_BUCKET }}/preview"
+          aws s3 sync build "s3://${{ secrets.DOCS_S3_BUCKET }}"
 
       - name: Invalidate cloudfront
         if: startsWith(github.ref, 'refs/tags/') || github.ref == 'refs/heads/main'