Helm Version on Cloud needs updating

Hi, 

I am trying to use Helm which comes preinstalled on the TeamCity cloud linux agents - however the version provided is 3.5.4. 

How can I either upgrade this on the fly? Or get an agent that has a newer version, the latest being Helm v3.7.1. 

I want to use the OCI push functionality which is pretty much described here (actually will be using Azure) - https://docs.aws.amazon.com/AmazonECR/latest/userguide/push-oci-artifact.html

The error in the build is - 

  Error: unknown command "push" for "helm"

helm push my-app-web-0.1.0.tgz oci://MYdevACR.azurecr.io/helm