Helm cli command to update Image tag

Question

I am trying to login remotely into my Helm repository and update Image tag in the values.yml file and later on push my changes into repository. Can someone please help me in updating Image tag and push helm charts to repo?

curl -fsSL -o get_helm.sh https://raw.githubusercontent.com/helm/helm/master/scripts/get-helm-3
chmod 700 get_helm.sh
./get_helm.sh
helm repo add charts https://harbor.xxx.com/chartrepo/nodeapp-helm-charts --username ${{ secrets.HARBOR_USERNAME }} --password ${{ secrets.HARBOR_PASSWORD }}
helm repo update
helm  repo list