01
Download and OPEN dmg file from this link Docker Doc, install , **read specifics on intel chip in your case
**make sure you system is up to date, before downloading DMG seen in video to the right
on mac
brew update
linux
sudo apt update
if you don't have homebrew
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
The sudo command didn'T work for me

02
**make sure you system is up to date
brew update
linux
sudo apt update
if you don't have homebrew
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"

03
run these commands, to install in command line,
be sure to put correct path Downloads/Docker.dmg
or it won't work
sudo hdiutil attach Downloads/Docker.dmg
sudo /Volumes/Docker/Docker.app/Contents/MacOS/install
sudo hdiutil detach /Volumes/Docker

04
start with Docker Desktop , for begginers with GUI eventually move on to Docker Engine command line, no GUI
**pic from video click top right img for link