test yarn

.github/workflows/build.yml

@@ -4,14 +4,13 @@ jobs:
   Explore-GitHub-Actions:
     runs-on: ubuntu-latest
     steps:
-      - run: echo "🎉 The job was automatically triggered by a ${{ github.event_name }} event."
-      - run: echo "🐧 This job is now running on a ${{ runner.os }} server hosted by GitHub!"
-      - run: echo "🔎 The name of your branch is ${{ github.ref }} and your repository is ${{ github.repository }}."
-      - name: Check out repository code
-        uses: actions/checkout@v2
-      - run: echo "💡 The ${{ github.repository }} repository has been cloned to the runner."
-      - run: echo "🖥️ The workflow is now ready to test your code on the runner."
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v2
+        with:
+          node-version: '14'
+          cache: 'yarn'
+      - run: |
+          yarn
       - name: List files in the repository
         run: |
           ls ${{ github.workspace }}
-      - run: echo "🍏 This job's status is ${{ job.status }}."