bug: Docker-Desktop starship takes long time

## Overview
When setting up Starship locally on docker-desktop based k8s system, pull the docker image seem to take the longest time. It also seems that the docker images are pulled serially.

```
Normal Pulling 6m24s kubelet Pulling image "prom/prometheus"
Normal Pulled 89s kubelet Successfully pulled image "prom/prometheus" in 4m30.000384332s (4m54.848304802s including waiting)
```

## Proposal
> We need to add warning on Starship docs page, or troubleshooting section

1. Maybe add a manual step to pull images before hand
2. Look into faster pulling of docker images

Start by reviewing the Starship documentation and identify the setup or troubleshooting section relevant to Docker Desktop-based Kubernetes. Confirm the image-pull delay described in the issue, then document the expected delay and/or a manual image-pull step; done means users can find clear guidance before setup.

Written by the indexing model from the issue text.