Create main.yml

.github/workflows/main.yml

@@ -0,0 +1,15 @@
+name: Hello World!
+
+on:
+push:
+branches:
+- master
+# note that your "main" branch might be called main instead of master
+
+jobs:
+hello_world_job:
+runs-on: ubuntu-20.04
+steps:
+- name: Say hello
+run: |
+echo "Hello World!"