How, when executing a command in CMD, was the contents of the CD constant substituted in the right place?

Question

bash

There is a special command that opens Chrome with some parameter, this parameter must have the address to the desired html file, which is located in the same directory in which the batch file with the command is launched.

"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe" --app=[тут должно быть содержимое константы CD]/index.html

Answer 1

"C:\Program Files (x86)\Google\Chrome\Application\chrome.exe" --app="%~dp0/index.html"

Answer 2

%CD%