Self Hosting - manage.ps1 error after setting up Ayon sever on NAS

Hello,

I’m figuring out how to do set up sever and self hosting on my local NAS.
I successfully installed docker container via Container Manager on my NAS. Service is working and I can access via web browser using [nas_name].local:port address. But instead of bootstrap setup I get to username/password page.
Someone else already had this problem and I know that what I need to do next is to run set up with manage.ps1

Since I used Container Manager to install docker package I don’t know where files from git are stored including manage.ps1. I downloaded them manually to project folder I specified when installing container.
I log in to my NAS via poweshell on Windows and when I run manage.ps1 setup command I get this error:

./manage.ps1: line 1: =[0]: command not found
./manage.ps1: line 3: syntax error near unexpected token {' ./manage.ps1: line 3: if ($ARGS.Length -gt 1) {’

I’m not sure how to fix this. I can’t find anything in the documentation and I’m not sure if I’m missing something.

Isn’t NAS linux based?
Does using this command make setup work? it explained here.