Update main.yml

.github/workflows/main.yml

@@ -6,6 +6,8 @@ jobs:
     steps:
     - uses: actions/checkout@v2
     - name: Install modules
-      run: yarn
+      run: yarn init
+      run: yarn add eslint --dev
+      run: yarn run eslint --init
     - name: Run ESLint
       run: eslint . --ext .js