PR: Add an action to deploy the webpage automatically (#9)

Co-authored-by: Ralf Gommers <ralf.gommers@gmail.com>

Author: steff456

.github/workflows/deploy.yml

@@ -0,0 +1,36 @@
+name: github pages
+
+on:
+  push:
+    branches:
+      - main  # Set a branch to deploy
+
+jobs:
+  deploy:
+    runs-on: ubuntu-20.04
+    concurrency:
+      group: ${{ github.workflow }}-${{ github.ref }}
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          submodules: true  # Fetch Hugo themes (true OR recursive)
+          fetch-depth: 0    # Fetch all history for .GitInfo and .Lastmod
+
+      - name: Setup Hugo
+        uses: peaceiris/actions-hugo@v2
+        with:
+          hugo-version: '0.97.0'
+          extended: true
+
+      - name: Create site
+        run: |
+          hugo
+          touch public/.nojekyll
+          echo data-apis.org > public/CNAME
+
+      - name: Deploy
+        uses: peaceiris/actions-gh-pages@v3
+        if: github.ref == 'refs/heads/main'
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./public