- Fixes#883.
Changes `BuildImageResolver` to use `fetch()` instead of `pull()`.
`fetch()` checks the cache first and only pulls if needed, preventing
incorrect progress events (e.g., "1/1 KB" metadata checks) on cached
images that caused the progress bar width calculation to produce
negative/weird padding counts, triggering "Fatal error: Negative count
not allowed" crashes during rebuilds.
- Closes#710.
## Type of Change
- [ ] Bug fix
- [x] New feature
- [ ] Breaking change
- [ ] Documentation update
## Motivation and Context
Fetching images during builds currently show just a 0.0s timer, and no
other info making builds appear hung. This adds a realtime download
progress bar with info, when pulling base images during builds.
<img width="1133" height="640" alt="Screenshot 2025-11-04 at 2 54 33 PM"
src="https://github.com/user-attachments/assets/200d8485-a956-4ce1-bbfe-d7406bd85774"
/>
## Testing
- [x] Tested locally
- [ ] Added/updated tests
- [ ] Added/updated docs
Raj