fix CD

.github/workflows/main.yml

@@ -5,15 +5,16 @@ on:
     branches:
       - master
 jobs:
-  build:
+  build-and-deploy:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@master
-    - name: Use Node.js 10.x
-      uses: actions/setup-node@v1
-      with:
-        version: 10.x
-    - name: Build
-      run: |
-        npm install
-        npm run build --if-present
+      - name: Checkout
+        uses: actions/checkout@master
+
+      - name: Build and Deploy
+        uses: JamesIves/github-pages-deploy-action@master
+        env:
+          ACCESS_TOKEN: ${{ secrets.ACCESS_TOKEN }}
+          BRANCH: gh-pages
+          FOLDER: build
+          BUILD_SCRIPT: yarn && yarn build