try non-self hosted

.github/workflows/deploy.yml

@@ -7,11 +7,18 @@ on:
 jobs:
   build:
 
-    runs-on: self-hosted
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [15.x]
 
     steps:
       - name: Checkout Repository
         uses: actions/checkout@v2
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v1
+        with:
+          node-version: ${{ matrix.node-version }}
       - name: Install & Build
         run: |
           npm run build:prod