Scanning a website

[SeriyVol4ishe]

I am new with Salt and as far as I have understood in order that scanning was made, on the server of the website has to be a salt-master and all keys must be accepted. I try to start salt-scanner in Docker-container with salt-master and his output is:

+ No default OS is configured. Detecting OS...
No minions matched the target. No command was sent, no jid was assigned.

Is it possible to scan a site using -t mysite.com or no? If yes, how can I do it?