Create workflow for deployment

Author: yoh1496

.github/workflows/deploy.yml

@@ -0,0 +1,49 @@
+# https://docusaurus.io/docs/deployment#deploying-to-github-pages
+
+name: Deploy to GitHub Pages
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+jobs:
+  test-deploy:
+    if: github.event_name != 'push'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
+        with:
+          node-version: 18
+          cache: yarn
+      - name: Install dependencies
+        working-directory: ./website
+        run: yarn install --frozen-lockfile
+      - name: Test build website
+        working-directory: ./website
+        run: yarn build
+
+  deploy:
+    if: github.event_name != 'pull_request'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
+        with:
+          node-version: 18
+          cache: yarn
+      - uses: webfactory/ssh-agent@v0.5.0
+        with:
+          ssh-private-key: ${{ secrets.GH_PAGES_DEPLOY }}
+      - name: Deploy to GitHub Pages
+        env:
+          GIT_USER: personiumio
+          USE_SSH: true
+        working-directory: ./website
+        run: |
+          git config --global user.email "personiumio@gmail.com"
+          git config --global user.name "personiumio"
+          yarn install --frozen-lockfile
+          yarn run publish-gh-pages