CODE EXAMPLE FOR SHELL

install docker

sudo apt-get update
sudo apt-get install 
    ca-certificates 
    curl 
    gnupg 
    lsb-release
sudo sudo mkdir -p /etc/apt/keyrings
# sudo is important here
sudo curl -fsSL https://download.docker.com/linux/debian/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
# GPG error
# sudo chmod a+r /etc/apt/keyrings/docker.gpg
echo 
  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/debian 
  $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

sudo apt-get update
sudo apt-get install docker-ce docker-ce-cli containerd.io docker-compose-plugin