how to add an existing repository to a project in github code example

Example 1: git add existing project to repository

git remote add origin <repository url>
git branch -M main
git push -u origin main

Example 2: how to add an existing project to github

# Go into your existing directory and run below commands
cd docker-spring-boot
echo "# docker-spring-boot" >> README.md
git init
git add -A
git commit -m "first commit"
git branch -M master
git remote add origin https://github.com/devopsmaster/docker-spring-boot.git
git push -u origin master