Add GitHub Actions Workflow for autodeploy

Author: vitkhab

.github/workflows/main.yml

@@ -0,0 +1,31 @@
+name: Deploy to GitHub Pages
+
+on:
+  push:
+    branches: [ master ]
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+      with:
+        submodules: true
+        fetch-depth: 0
+
+    - name: Setup Hugo
+      uses: peaceiris/actions-hugo@v2
+      with:
+        hugo-version: '0.56.0'
+        extended: true
+
+    - name: Build
+      run: hugo --minify
+
+    - name: Deploy
+      uses: peaceiris/actions-gh-pages@v3
+      with:
+        github_token: ${{ secrets.GITHUB_TOKEN }}
+        publish_dir: ./public
+        publish_branch: gh-pages