Add deploy to gh pages action (#690)

.github/workflows/publish.yml

@@ -62,4 +62,27 @@ jobs:
           HUSKY_SKIP_INSTALL: true
       - run: npm publish
         env:
-          NODE_AUTH_TOKEN: ${{secrets.NPM_TOKEN}}
+          NODE_AUTH_TOKEN: ${{secrets.NPM_TOKEN}}
+
+  deploy-gh-pages:
+    needs: publish-npm
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+        with:
+          fetch-depth: 1
+      - uses: actions/setup-node@v1
+        with:
+          node-version: 10
+          registry-url: https://registry.npmjs.org/
+      - name: Build
+        run: |
+          npm ci
+          npm run build
+          rm -rf public/test
+      - name: Deploy
+        uses: peaceiris/actions-gh-pages@v2.5.0
+        env:
+          ACTIONS_DEPLOY_KEY: ${{ secrets.ACTIONS_DEPLOY_KEY }}
+          PUBLISH_BRANCH: gh-pages
+          PUBLISH_DIR: ./public