Install Docker from https://www.docker.com/products/docker#mac

If you are not familiar with Docker, read and study https://docs.docker.com/engine/getstarted/ - This goes through the "getting started" support of Docker, with Kitematic, the new GUI interface engine.

The first instructions below are for Kitematic (for Mac, Windows is similar), but they are incomplete... If you are already comfortable with the command-line version of Docker, then you can probably use the Linux instructions on the separate page at HSPC Sandbox container.

1. If you want to use the new Kitematic GUI interface, then this what you will see in the Mac Applications Folder :

Click on the Kitematic button, and you will get this:

Any Docker containers that are already installed are listed on the left-hand side. You can start a container that is already installed by selecting it, and clicking the start button that appears. There is also another button that will appear when you click in the left-hand side of the window for adding a new Docker image from the official Docker repository.