Creating a new repository on the command line

touch README.md
git init
git add README.md
git commit -m "first commit"
git remote add origin https://eugit.opencloud.lu/cataspanglish/TUBES--Self-Assembly-Edition.git
git push -u origin master

Pushing an existing repository from the command line

git remote add origin https://eugit.opencloud.lu/cataspanglish/TUBES--Self-Assembly-Edition.git
git push -u origin master