Merge pull request #289 from pgpointcloud/fix_website_deployment

Fix website deployment

.github/workflows/website.yml

@@ -2,13 +2,13 @@ name: "Website"
 
 on:
   push:
-    branches:
-    - master
+  pull_request:
+    types: [opened]
 
 jobs:
   code:
     name: Website
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-20.04
     steps:
       - name: Check out repository code
         uses: actions/checkout@v2
@@ -17,8 +17,9 @@ jobs:
       - name: Build html documentation
         run: virtualenv -p /usr/bin/python3 venv && source venv/bin/activate && pip install sphinx sphinx_rtd_theme && cd doc && make html && cd -
       - name: Deploy
-        uses: peaceiris/actions-gh-pages@v2.4.0
-        env:
-          ACTIONS_DEPLOY_KEY: ${{ secrets.ACTIONS_DEPLOY_KEY }}
-          PUBLISH_BRANCH: gh-pages
-          PUBLISH_DIR: ./doc/build/html/
+        uses: peaceiris/actions-gh-pages@v3
+        if: ${{ github.ref == 'refs/heads/main' }}
+        with:
+          deploy_key: ${{ secrets.ACTIONS_DEPLOY_KEY }}
+          publish_branch: gh-pages
+          publish_dir: ./doc/build/html/