focal apt-get install docker-ce=<VERSION_STRING> docker-ce-cli=<VERSION_STRING> containerd.io code example

Example 1: docker install ubuntu

$ sudo apt-get update

$ sudo apt-get install \
    apt-transport-https \
    ca-certificates \
    curl \
    gnupg-agent \
    software-properties-common

Example 2: ubuntu install docker

sudo usermod -aG docker ${USER}