add Github action

.github/workflows/deploy.yml

@@ -0,0 +1,33 @@
+
+name: Deploy to ftp
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  build:
+    name: Build and Deploy
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Setup Ruby
+        uses: ruby/setup-ruby@55283cc23133118229fd3f97f9336ee23a179fcf # v1.146.0
+        with:
+          ruby-version: '3.1' # Not needed with a .ruby-version file
+          bundler-cache: true # runs 'bundle install' and caches installed gems automatically
+          cache-version: 0 # Increment this number if you need to re-download cached gems
+      - name: Build with Jekyll
+        run: bundle exec jekyll build
+        env:
+          JEKYLL_ENV: production
+      - name: Upload via FTP
+        uses: airvzxf/ftp-deployment-action@latest
+        with:
+          server: ${{ secrets.FTP_SERVER }}
+          user: ${{ secrets.FTP_LOGIN }}
+          password: ${{ secrets.FTP_PASSWORD }}
+          local_dir: "./_site"
+          remote_dir: "./"