Git, GitHub, and Your First Repo

# One-time setup
git config --global user.name  "Your Name"
git config --global user.email "[email protected]"

# Start a new repo from a folder you already have
cd my-project
git init                    # turn this folder into a git repo
git status                   # see what changed since last commit

# Save your work as a commit
git add .                    # stage every changed file
git commit -m "Add the bio page"   # snapshot, with a message

# Sync with GitHub (after you create the repo on github.com)
git remote add origin https://github.com/you/my-project.git
git branch -M main           # rename the default branch to 'main'
git push -u origin main      # first push: -u sets the upstream

# Day to day from then on
git pull                     # get teammates' changes
git add .                    # stage your edits
git commit -m "Fix the header alignment"
git push                     # send your commits to GitHub

# Start a new branch from main
git checkout -b feature/contact-form

# ... edit files, make commits ...
git add .
git commit -m "Add contact form with validation"

# Push the branch to GitHub
git push -u origin feature/contact-form

# On GitHub: 'Compare & pull request' button appears.
# Open the PR, get a review, merge.

# After the PR is merged, clean up locally:
git checkout main
git pull                              # get the merged code
git branch -d feature/contact-form    # delete the local branch

# .github/workflows/ci.yml
name: CI

on:
  push:
    branches: [main]
  pull_request:
    branches: [main]

jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with:
          node-version: '20'
          cache: 'npm'
      - run: npm ci
      - run: npm run lint
      - run: npm test --if-present