Create deploy.yml

.github/workflows/deploy.yml

@@ -0,0 +1,15 @@
+name: Build and deploy
+
+on:
+  push:
+    branches: [ master ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Build and deploy
+        uses: borales/actions-yarn@v2.0.0
+        with:
+          cmd: deploy