Update main.yml

Author: wangbinyq

.github/workflows/main.yml

@@ -43,7 +43,8 @@ jobs:
             ${{ runner.os }}-yarn-
 
       - name: Build
-        run: npm run build
+      - run: yarn install --frozen-lockfile
+      - run: yarn build
 
       - name: Deploy
         uses: peaceiris/actions-gh-pages@v3