Create base.yml

.github/workflows/base.yml

@@ -0,0 +1,21 @@
+name: CI
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+    # The type of runner that the job will run on
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Yarn
+        run: yarn install
+
+      - name: Run a multi-line script
+        run: yarn ci