Hey @Ali, follow this guide, hope it helps
System requirements:
- MAC hardware should be a 2010 or newer model
 
- Intel's hardware support for virtualization
 
- Minimum RAM requirements - 4GB
 
- VirtualBox of version 4.3.30 or above 
 
Installation steps:
- Double click on this dmg file and drag and drop it into the application folder
 
- You'll see the docker.app installed
 
- Double click on docker.app to authorize the installation with the system password and your docker is up and running
 
Verification:
Execute the following commands to check if your docker is running fine and check the versions
docker --version
docker-compose --version
docker-machine --version