NextCloudPi Define IP access & modify ncp.sh How?

Hi, Im installing NextCloudPi in Docker.
I want to make changes in the ncp.sh file (section from line 55, I want to add/remove local addresses)
But how can I edit the ncp.sh file?

I don’t know ncp.sh directory. I run ls and cannot find it
I don’t know command. docker run vi ncp.sh?