diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
new file mode 100644
index 0000000..29efcca
--- /dev/null
+++ b/.github/workflows/main.yml
@@ -0,0 +1,15 @@
+name: CI
+
+on: [push]
+
+jobs:
+  branch-list:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@master
+      - name: Print GitHub Context # Debug step
+        env:
+          GITHUB_CONTEXT: ${{ toJson(github) }}
+        run: echo "GitHub context is $GITHUB_CONTEXT"
+      - name: do branch-list
+        run: git branch -a