docker Installation

https://www.youtube.com/watch?v=oakEYwFReLA&ab_channel=CyberJunkie 0) To check if it is ok to download from this site:curl -fsSL https://download.docker.com/linux/debian/gpg | sudo apt-key add 1) Change permission to write in sources.list.d file:chmod 777 /etc/apt/sources.list.d 2) add docker link to sources file:echo 'deb https://download.docker.com/linux/debian stretch stable'> /etc/apt/sources.list.d/docker.list 3) remove if already exist:apt remove docker docker-engine docker.io 4) install docker:sudo apt-get install docker-ce 5) check if docker works:sudo docker run hello-world