Step-by-Step Guide to Setting Up a CI/CD Pipeline for a Node.js Application

#cicd #devops #node #githubactions

Setting up a CI/CD (Continuous Integration/Continuous Deployment) pipeline greatly improves development speed and code quality. Here’s a clear guide to get started with Node.js:

Steps to Set Up CI/CD for Node.js

Version Control Setup
- Use a service like GitHub, GitLab, or Bitbucket.
- Example: Initialize git in your project folder:
```
git init
git remote add origin https://github.com/username/repo.git
```
CI/CD Tool Selection
- Common choices: GitHub Actions, GitLab CI, Jenkins, CircleCI.
- Example: Using GitHub Actions for automation.

Create Pipeline Configuration

Usually done with YAML files specifying steps.
Example (.github/workflows/nodejs.yml):

name: Node.js CI
on:
push:
branches: [ main ]
jobs:
build:
runs-on: ubuntu-latest
steps:
  - uses: actions/checkout@v3
  - name: Setup Node.js
    uses: actions/setup-node@v3
    with:
      node-version: '18'
  - run: npm install
  - run: npm test

Testing
- Ensure your pipeline runs tests automatically.
- Example in the config above: npm test command.

Deployment Step

Add deployment after tests pass.
Example: Deploy to Heroku or another cloud after success.
GitHub Actions example step:

  - name: Deploy to Heroku
    uses: akhileshns/heroku-deploy@v3.12.12
    with:
      heroku_api_key: ${{ secrets.HEROKU_API_KEY }}
      heroku_app_name: "your-app-name"
      heroku_email: "your-email@example.com"