chore(cache): Implement a cache for docusaurus build

.github/workflows/preview-env-deploy.yml

@@ -2,6 +2,9 @@ name: preview-env-deploy
 on:
   pull_request:
     types: [labeled, synchronize]
+  push:
+    branches:
+      - master
 
 concurrency:
   cancel-in-progress: true
@@ -17,6 +20,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: Import secrets from Vault
+        if: github.ref != 'refs/heads/main'
         id: secrets
         uses: hashicorp/vault-action@d1720f055e0635fd932a1d2a48f87a666a57906c
         with:
@@ -38,15 +42,26 @@ jobs:
           DOCS_SITE_BASE_URL: /pr-${{ github.event.number }}/
         run: npm run build
 
+      - name: Create docusaurus cache
+        uses: actions/cache/save@v4
+        with:
+          path: |
+            .docusaurus
+            /**/.cache
+          key: ${{ runner.os }}-docusaurus-dummytest
+
       - name: Authenticate with Google Cloud
+        if: github.ref != 'refs/heads/main'
         uses: google-github-actions/auth@v2
         with:
           credentials_json: ${{ steps.secrets.outputs.PREVIEW_ENV_GCLOUD_SA_KEY }}
 
       - name: Set up Cloud SDK
+        if: github.ref != 'refs/heads/main'
         uses: google-github-actions/setup-gcloud@v2
 
       - name: Start Deployment
+        if: github.ref != 'refs/heads/main'
         uses: bobheadxi/deployments@v1
         id: deployment
         with:
@@ -56,12 +71,14 @@ jobs:
           ref: ${{ github.event.pull_request.head.sha }}
 
       - name: Upload files to Google bucket
+        if: github.ref != 'refs/heads/main'
         env:
           BUCKET_NAME: ${{ steps.secrets.outputs.PREVIEW_ENV_BUCKET_NAME }}
         run: |
           gsutil -m rsync -d -r build gs://$BUCKET_NAME/pr-${{ github.event.number }}
 
       - uses: bobheadxi/deployments@v1
+        if: github.ref != 'refs/heads/main'
         with:
           step: finish
           token: ${{ github.token }}
@@ -71,16 +88,19 @@ jobs:
           env_url: https://${{ steps.secrets.outputs.PREVIEW_ENV_BUCKET_NAME }}/pr-${{ github.event.number }}/index.html
 
       - name: Shorten commit SHA
+        if: github.ref != 'refs/heads/main'
         run: echo "short_sha=$(echo ${{ github.sha }} | cut -c1-8)" >> $GITHUB_ENV
 
       - name: Find previous deployment or tear-down comment
+        if: github.ref != 'refs/heads/main'
         uses: peter-evans/find-comment@v3
         id: find-comment
         with:
           issue-number: ${{ github.event.number }}
           body-includes: <!-- preview-env -->
 
       - name: Upsert deployment comment
+        if: github.ref != 'refs/heads/main'
         uses: peter-evans/create-or-update-comment@v4
         env:
           BUCKET_NAME: ${{ steps.secrets.outputs.PREVIEW_ENV_BUCKET_NAME }}