I want to run gitlab-runner like executing commands hook only

Question

I have a dedicated server and attached Git-Runner. We just want to run something like this on a file path

git pull
npm install
npm run prod

the problem is git-runner is not picking up already installed packages like npm. I also completed setting up the git-runner user to ubuntu (sudo-user) and also i get echo of user name in CI-CD pipeline.

At last this CI-CD pipeline is going to execute shell script file every time we push and update the server nothing else.

our main motive is to update the server by firing commands