1. download/instal docker

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
**this isn't working for me

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