Minimal single-broker setup for running integration tests locally.

• Docker Engine 20.10+
• Docker Compose 2.0+

cd docker/
docker compose up -d

docker compose ps
# The broker should show "Up" / "healthy"

# From the repository root (with venv activated)
pytest integration_tests/ -v

The tests connect to http://127.0.0.1:6650 by default. Override with:

DANUBE_BROKER_URL=http://your-host:6650 pytest integration_tests/ -v

docker compose down -v   # -v removes volumes for a fresh start

• Embedded Raft metadata store — no external dependency required
• Single broker — gRPC on port 6650, admin on 50051
• No TLS, no auth, filesystem backend
• Broker advertises as 127.0.0.1:6650 so topic lookups resolve from the host