asdf

Install asdf

sudo apt install curl git gcc

mkdir install
cd install
git clone https://github.com/asdf-vm/asdf.git ~/.asdf --branch v0.10.0

echo ". $HOME/.asdf/asdf.sh" >> ~/.bashrc
echo ". $HOME/.asdf/completions/asdf.bash" >> ~/.bashrc
source ~/.bashrc

Install Ruby

asdf plugin add ruby
asdf install ruby 3.1.0
asdf local ruby 3.1.0