Workflow: Excessive `docker pull` operations in Actions cause timeouts and unstable CI runs

[samzong]

Describe

The current workflow .github/workflows/integration-test-docker.yml is relies on scripts/quickstart.sh, which triggers a full docker compose launch.

This results in pulling a large number of heavy container images from multiple remote registries. On GitHub-hosted runners there is no persistent Docker cache and all images are fetched on every run.

The workflow frequently stalls or times out during docker pull, leading to unstable and slow CI runs.

To Reproduce

1. Run the test-quickstart job in GitHub Actions.
2. Observe the docker compose step pulling many images.
3. The job eventually hangs or exceeds the step timeout during image pulling.

Expected behavior

1. Use ghcr.io for all images
2. Introduce docker-compose.ci.yml to strip nonessential services for CI. Replace UI-related tests with simple curl checks instead of bringing up (chat-ui, grafana, openwebui, etc.)

the current quickstart drops the entire “local-dev full stack” straight into CI.

[noalimoy]

/assign