[ENHANCEMENT] add this

[redsunfex]

Add something like this to first-steps.md, or don't. Project is unusable without out:

First time I've tried to access I had the same problem. I've typed the URL bar: "serveraddress:3000" but didn't noticed it actually redirected me to "serveraddress:3000/login" and of course I can't login because fresh installs don't have credentials setup (3000 is the default port, if you changed it then use yours instead).

Solution for me was to delete the "/login" at the end of the URL to force it "serveraddress:3000". Then it worked like charm, first run setup screen came up, where you can give your admins credentials.