Custom package registry inputs in templates

Proposal

Many organisations use private mirrors such as Nexus or Artifactory. Right now the templates always use the default public registries.

To make them more flexible, add optional inputs that let users point dependency installs at custom package registries.

This would allow the templates to install from private sources without modification, making them easier to adopt in enterprise environments and avoiding the need to fork (and modify) this component.

Note

I’d be happy to pick this up and submit an MR.