download docker ubuntu 20.04 code example
Example 1: install docker ubuntu
sudo apt install docker.io
Example 2: install docker in ubuntu
$ sudo apt-get remove docker docker-engine docker.io
$ sudo apt-get update
$ sudo apt install docker.io
$ sudo snap install docker
$ docker --version
Example 3: install docker on ubuntu 18.04
sudo apt install docker-ce
https://www.digitalocean.com/community/tutorials/how-to-install-and-use-docker-on-ubuntu-18-04
Example 4: docker install ubuntu
$ sudo add-apt-repository \
"deb [arch=amd64] https://download.docker.com/linux/ubuntu \
$(lsb_release -cs) \
stable"