Update main.yaml

Use yarn action

.github/workflows/main.yaml

@@ -7,10 +7,19 @@ jobs:
     runs-on: ubuntu-latest
     name: Build Vue
     steps:
-    - uses: actions/checkout@v2
-    - id: Build-Vue
-      uses: xRealNeon/VuePagesAction@1.0.1
+    - uses: actions/checkout@v3
+
+    - name: Set Node.js 16.x
+      uses: actions/setup-node@v3
       with:
-        username: 'aksw'
-        reponame: 'OntoPad'
-        token: ${{ secrets.GITHUB_TOKEN }} # Leave this line unchanged
+        node-version: 16.x
+
+    - name: Run install
+      uses: borales/actions-yarn@v4
+      with:
+        cmd: install # will run `yarn install` command
+    - name: Build production bundle
+      uses: borales/actions-yarn@v4
+      with:
+        cmd: build # will run `yarn build` command
+