test github ci

.github/workflows/main.yml

@@ -19,6 +19,8 @@ jobs:
       run: |
         curl -o- -L https://yarnpkg.com/install.sh | bash
         export PATH=$HOME/.yarn/bin:$PATH
+    - name: Install packages
+      run: yarn
     - name: Build Code
       run: yarn run build:travis
     - name: Deploy to CDN