Create hello.yml

.github/workflows/hello.yml

@@ -0,0 +1,26 @@
+name: CI
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix: 
+        hello: [AAA, CCC, EEE]
+        include:
+          - hello: AAA
+            bye: BBB
+          - hello: CCC
+            key: DDD
+          - hello: EEE
+            bye: FFF
+    steps:
+    - uses: actions/checkout@v2
+    
+    - name: Run a one-line script
+      run: echo HELLO ${{matrix.hello}} and BYE ${{matrix.bye}}