1 - Introduction to GitHub Actions

In this lab you will update and run your first workflow.

Duration: 5-10 minutes

References:

• Events that trigger workflows
• Adding an action to your workflow

1.1 Update the workflow to trigger when a change is made to the labs folder on main branch

1. Open the workflow file github-actions-demo.yml
2. Edit the file and copy the following YAML content after line 4: ```YAML push: branches:
   • main paths:
   • ‘labs/**’ ```
3. Commit the workflow changes into the main branch
4. Change a file inside the folder labs
5. Commit the changes into the main branch
6. Go to Actions and see the details of your running workflow

1.2 Add steps to your workflow

1. Open the workflow file github-actions-demo.yml
2. Edit the file and copy the following YAML content at the end of the file: ```YAML # 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 $.’
     ```
3. Optional remove the paths to trigger the workflow on any push to main branch
4. Commit the changes into the main branch
5. If not step 3), change a file inside the folder labs and commit the changes into the main branch
6. Go to Actions and see the details of your running workflow

1.3 Final

github-actions-demo.yml

```YAML 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 $ event." - run: echo "🐧 This job is now running on a $ server hosted by GitHub!" - run: echo "🔎 The name of your branch is $ and your repository is $." - name: Check out repository code uses: actions/checkout@v4 - run: echo "💡 The $ 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 $ - run: echo "🍏 This job's status is $." - name: Adding markdown run: echo "### Hello world! :rocket:" >> "$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 $.' ```