ci: simplify the workflows (#5541)

.github/workflows/docs.yml

@@ -1,13 +1,18 @@
-name: Build Docs
+name: Docs
 
 on:
   pull_request:
     paths:
       - 'www'
       - '*.md'
+  push:
+    branches:
+      - master
 
 jobs:
   build:
+    name: Build Docs
+    if: github.event_name == 'pull_request'
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
@@ -18,3 +23,30 @@ jobs:
         uses: go-task/setup-task@v1
       - name: Build site
         run: task docs
+
+  build-and-release:
+    if: github.event_name == 'push' && github.ref == 'refs/heads/master'
+    name: Build and Release Docs
+    permissions:
+      contents: read
+      deployments: write
+      pull-requests: write
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v5
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+      - name: Install Task
+        uses: go-task/setup-task@v1
+      - name: Build site
+        run: task docs
+      - name: Deploy to Cloudflare Pages
+        uses: cloudflare/wrangler-action@v3
+        with:
+          apiToken: ${{ secrets.CLOUDFLARE_API_TOKEN }}
+          accountId: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
+          command: pages deploy www/public --project-name=${{ secrets.CLOUDFLARE_PROJECT_NAME }}
+          gitHubToken: ${{ secrets.GITHUB_TOKEN }}
+