python3 -m http.server 8000

git submodule add git@github.com:szigyi/colour-experiment-trial.git

cd retrospect-questions
git pull origin master
cd ..
git status
git add .
git commit -m "update submodule retrospect-questions"

cd colour-experiment-trial
git pull origin main
cd ..
git status
git add .
git commit -m "update submodule colour-experiment-trial"