Trying to make sure external contributor trigger C.I.

.github/workflows/ci.yml

@@ -1,7 +1,10 @@
 name: ci
 run-name: ${{ github.actor }} is testing out GitHub Actions 🚀
 
-on: [push]
+on: 
+  push:
+  pull_request:
+    types: [opened]
 
 jobs:
   windows-latest: