added two workflows

Author: kameshsampath

.github/workflows/main.yml

@@ -1,9 +1,9 @@
-name: Knative Tutorial Site
+name: Knative Tutorial
 
 on:
   push:
     branches: 
-      - master
+      - release/0.7.x
 env:
   SITE_DIR: 'gh-pages'
 jobs:
@@ -16,7 +16,7 @@ jobs:
       - name: "Generate site using antora site action"
         uses: kameshsampath/antora-site-action@master
         with:
-         antora_playbook: staging.yaml
+         antora_playbook: site.yaml
       - name: "List folder"
         run: |
            ls -ltr $GITHUB_WORKSPACE/

.github/workflows/staging.yml

@@ -0,0 +1,49 @@
+name: Knative Tutorial Staging
+
+on:
+  push:
+    branches: 
+      - master
+env:
+  SITE_DIR: 'gh-pages'
+jobs:
+  build_site:
+    name: "Build site with Antora"
+    runs-on: [ubuntu-latest]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: "Generate site using antora site action"
+        uses: kameshsampath/antora-site-action@master
+        with:
+         antora_playbook: staging.yaml
+      - name: "List folder"
+        run: |
+           ls -ltr $GITHUB_WORKSPACE/
+      - name: "Upload generated site"
+        uses: actions/upload-artifact@v1.0.0
+        with:
+          name: site
+          path: "${{ github.workspace }}/${{ env.SITE_DIR }}"
+  deploy_site:
+    runs-on: [ubuntu-latest]
+    needs: [build_site]
+    name: "Deploy to Staging"
+    steps:
+     - name: Checkout
+       uses: actions/checkout@v2
+       with:
+         repository: 'https://github.com/redhat-developer-docs/knative-tutorial-staging'
+         token: "${{ env.GITHUB_TOKEN }}"
+     - name: Download generated site
+       uses: actions/download-artifact@v1
+       with:
+         name: site
+         path: "${{ github.workspace }}/${{ env.SITE_DIR }}"
+     - name: Deploy to GitHub Pages
+       uses: JamesIves/github-pages-deploy-action@3.2.1
+       with:
+        GITHUB_TOKEN: " ${{ secrets.KNATIVE_TUTORIAL_STAGING}}"
+        FOLDER: "${{ env.SITE_DIR }}"
+        BRANCH: 'gh-pages'
+        COMMIT_MESSAGE: "[Staging] Publish Documentation for ${{ github.sha }}"