How to: Verify and upgrade images in Helm charts
There are two commands built into arkade designed for software vendors and open source maintainers.

* `arkade helm chart upgrade` - run this command to scan for container images and update them automatically by querying a remote registry.
* `arkade helm chart verify` - after changing the contents of a values.yaml or docker-compose.yaml file, this command will check each image exists on a remote registry

Whilst end-users may use a GitOps-style tool to deploy charts and update their versions, maintainers need to make conscious decisions about when and which images to change within a Helm chart or compose file.

These two features are used by OpenFaaS Ltd on projects and products like OpenFaaS CE/Pro (Serverless platform) and faasd (docker-compose file).