github-actions.mdx

title	Introduction to GitHub Actions
sidebar_label	1. GitHub Actions
sidebar_position	1
description	Learn how to automate your software development workflows directly in your GitHub repository. From running tests to deploying your website, GitHub Actions has you covered.
tags	github automation ci/cd devops workflow
keywords	github actions automation ci/cd devops workflow yml events jobs actions

In a professional workflow, we don't want to manually run tests or deploy our website every time we make a change. We want a system that does it for us.

GitHub Actions is an automation platform that allows you to create custom software development life cycle (SDLC) workflows directly in your GitHub repository.

:::info What is GitHub Actions? GitHub Actions is a powerful tool that lets you automate tasks like testing, building, and deploying your code whenever certain events happen in your repository. It's like having a robot assistant that takes care of the repetitive tasks for you. :::

How it Works: The "Robot Assistant"

Think of GitHub Actions as a Robot Assistant that follows a simple rule:

"When [This Event] happens, do [This Job]."

• The Event: Someone pushes code, opens a Pull Request, or even stars your repo.
• The Job: Run security scans, check for code errors, or deploy the site to a server.

The Core Concepts

To master Actions at CodeHarborHub, you need to understand these four terms:

1. Workflows: The automated process (stored in a .yml file).
2. Events: The "Trigger" that starts the workflow (e.g., push).
3. Jobs: A set of steps that execute on the same runner (a virtual computer).
4. Actions: Reusable building blocks (like a "Login to AWS" block or "Install Node.js" block).

Creating Your First Workflow

GitHub Actions are defined in YAML files. You must place them in a specific folder in your project: .github/workflows/.

name: CodeHarborHub Welcome
on: [push] # The Trigger

jobs:
  greet-developer:
    runs-on: ubuntu-latest # The Virtual Machine
    steps:
      - name: Say Hello
        run: echo "Automation is running successfully for CodeHarborHub!"

The CI/CD Pipeline

GitHub Actions is most commonly used for CI/CD:

• Continuous Integration (CI): Automatically building and testing code so that errors are caught immediately when a developer pushes a branch.
• Continuous Deployment (CD): Automatically "Pushing" the code to a live server (like Vercel, Netlify, or AWS) after the tests pass.

Why use Actions at CodeHarborHub?

Benefit	Description
No More "Works on my machine"	Tests run on a clean cloud computer every time.
Speed	Robots work 24/7. Your site deploys the second you merge a PR.
Security	Automatically scan your code for leaked passwords or vulnerable packages.
Free for Open Source	GitHub provides free minutes for public repositories!

Monitoring Your Actions

Once you push a workflow file, you can watch it run in real-time:

1. Go to your repository on GitHub.
2. Click the Actions tab.
3. Click on a specific "Workflow Run" to see the logs and status.

:::tip Don't reinvent the wheel! Visit the GitHub Marketplace to find thousands of pre-written Actions created by the community that you can drop into your own projects. :::