I am following this devdoc to get grunt working in Magento 2.1: http://devdocs.magento.com/guides/v2.1/frontend-dev-guide/css-topics/css_debug.html
I followed all of the steps and tried to run grunt exec on the blank theme, but got an error as seen below.
Running "exec:blank" (exec) task
Running "clean:blank" (clean) task
>> 0 paths cleaned.
Done, without errors.
Execution Time (2017-05-18 08:54:02 UTC-5)
loading tasks 829ms ██████████████████████████████████████████████ 97%
clean:blank 18ms █ 2%
Total 853ms
>> 'php' is not recognized as an internal or external command,
>> operable program or batch file.
>> Exited with code: 1.
Warning: Task "exec:blank" failed. Use --force to continue.
Aborted due to warnings.
Do I need to run grunt from a different place? I am using docker to run my local magento environment, so php is being run on its own docker container.
Has anyone else run into this issue?