Git gitignore 생성

1. .gitignore 추가

echo "# first commit Readme" >> README.md
git add .gitignore
git commit -m ".gitignore commit"
git push origin main

2. MacOS

.DS_Store
.AppleDouble
.LSOverride

3. WindowsOS

Thumbs.db
Thumbs.db:encryptable
ehthumbs.db
ehthumbs_vista.db