Hi Jay,
Yes I’ve sat through a few installs and the panic does recede with experience.
The language used reflects the negative result of the if statement on line 131.
In coding terms this is correct but in reality it is expected behaviour not to find Docker installed as most people have just set up a clean install.
I always thought this code I pasted into the command line would/should have installed Docker without the need for dialogue?
sudo -s
git clone https://github.com/discourse/discourse_docker.git /var/discourse
cd /var/discourse