Create github-actions-demo.yml

.github/workflows/github-actions-demo.yml

@@ -0,0 +1,34 @@
+name: 01-1. GitHub Actions Demo
+on: 
+  workflow_dispatch:
+  workflow_call:
+  push:
+    branches:
+      - main
+
+jobs:
+  Explore-GitHub-Actions:
+    runs-on: ubuntu-latest
+    steps:
+      - run: echo "🎉 The job was automatically triggered by a ${{ github.event_name }} event."
+      - run: echo "🐧 This job is now running on a ${{ runner.os }} server hosted by GitHub!"
+      - run: echo "🔎 The name of your branch is ${{ github.ref }} and your repository is ${{ github.repository }}."
+      - name: Check out repository code
+        uses: actions/checkout@v4
+      - run: echo "💡 The ${{ github.repository }} repository has been cloned to the runner."
+      - run: echo "🖥️ The workflow is now ready to test your code on the runner."
+      - name: List files in the repository
+        run: |
+          ls ${{ github.workspace }}
+      - run: echo "🍏 This job's status is ${{ job.status }}."
+      - name: Adding markdown
+        run: echo "### Hello world! :rocket:" >> "$GITHUB_STEP_SUMMARY"
+      # This step uses GitHub's hello-world-javascript-action: https://github.com/actions/hello-world-javascript-action
+      - name: Hello world
+        uses: actions/hello-world-javascript-action@main
+        with:
+          who-to-greet: "Mona the Octocat"
+        id: hello
+      # This step prints an output (time) from the previous step's action.
+      - name: Echo the greeting's time
+        run: echo 'The time was ${{ steps.hello.outputs.time }}.'