Feature Request (docs): explain how to deploy a custom policy

[flavio]

Is your feature request related to a problem?

The current documentation doesn't explain how a user is supposed to deploy a custom policy, one that is not hosted on Artifact HUB

Solution you'd like

Update the documentation with a new section that explains the steps required to deploy a policy that is not hosted on Artifact HUB

Alternatives you've considered

No response

Anything else?

No response

[jhkrug]

Hi @flavio. If you like, you (or someone) can sketch this one out and I'll pick it up? It's probably useful for me.