chore: Update Github Workflow to deploy older version (#3205)

This PR updates the github workflow to deploy older versions to the
docsite after the move to CloudFlare and with the use of the new
hugo.cloudflare.toml config


The workflow was setup for the migration from the older config to the
new one, which will not be necessary anymore since we exclusively use
only the hugo.cloudflare.toml config

Author: dishaprakash

.github/workflows/deploy_previous_version_docs_to_cf.yaml

@@ -29,56 +29,36 @@ jobs:
       contents: write
 
     steps:
-      - name: Checkout Tag (Code + Content)
+      - name: Checkout main branch (for latest templates and theme)
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
         with:
-          ref: ${{ github.event.inputs.version_tag }}
+          ref: 'main'
           submodules: 'recursive'
           fetch-depth: 0
 
-      - name: Apply Backports and Fixes
+      - name: Checkout old content from tag into a temporary directory
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
+        with:
+          ref: ${{ github.event.inputs.version_tag }}
+          path: 'old_version_source'
+          sparse-checkout: |
+            docs
+
+      - name: Replace content with old version
         run: |
-          # 1. Fetch main to get the compressed GIF
-          git fetch origin main
-          
-          git show origin/main:docs/en/documentation/configuration/toolbox-ui/edit-headers.gif > docs/en/how-to/toolbox-ui/edit-headers.gif
-          
-          sed -i 's|/genai-toolbox/|/|g' .hugo/layouts/partials/navbar-version-selector.html
-
-          sed -i 's|https://googleapis.github.io/genai-toolbox|https://mcp-toolbox.dev|g' .hugo/hugo.toml
-
-          git show origin/main:.hugo/hugo.cloudflare.toml > modern_config.toml
-          
-          # Graft the future version list into the old config using Node.js!
-          node -e "
-          const fs = require('fs');
-          const modern = fs.readFileSync('modern_config.toml', 'utf8');
-          let old = fs.readFileSync('.hugo/hugo.toml', 'utf8');
-          
-          // Convert any old GitHub URLs to Cloudflare in the rest of the config
-          old = old.replace(/https:\/\/googleapis\.github\.io\/genai-toolbox/g, 'https://mcp-toolbox.dev');
-          
-          // Erase the outdated version list from the old config
-          old = old.replace(/\[\[params\.versions\]\][\s\S]*?(?=\n\[\[|\n\[|$)/g, '');
-          
-          // Extract the fully updated version list from the modern config
-          const modernVersions = modern.match(/\[\[params\.versions\]\][\s\S]*?(?=\n\[\[|\n\[|$)/g);
-          
-          // Inject the modern versions into the old config
-          if (modernVersions) {
-            fs.writeFileSync('.hugo/hugo.toml', old + '\n\n' + modernVersions.join('\n'));
-          } else {
-            fs.writeFileSync('.hugo/hugo.toml', old);
-          }
-          "
-
-
-      - name: Setup Hugo and Node
+          # Remove the current content directory from the main branch checkout
+          rm -rf docs/
+          # Move the old content directory into place
+          mv ./old_version_source/docs docs
+
+      - name: Setup Hugo
         uses: peaceiris/actions-hugo@75d2e84710de30f6ff7268e08f310b60ef14033f # v3
         with:
           hugo-version: "0.161.1"
           extended: true
-      - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6
+
+      - name: Setup Node
+        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6
         with:
           node-version: "22"