Problem

docker volume prune -f does NOT remove named volumes. The mysql-mgmt compose file creates a named volume default_generated that stores MySQL Router bootstrap config (credentials, certificates). This volume persists across container recreations and causes "Router instance already configured" errors on re-runs.

Files: services/mysql-mgmt/docker_compose.yml, tests/setup/main.tf

Fix

In the Terraform destroy provisioner, add explicit volume removal:

docker exec $HOSTNAME docker volume rm $(docker exec $HOSTNAME docker volume ls -q)

Acceptance Criteria

• Terraform destroy provisioner explicitly removes all named volumes via docker volume rm
• Re-deployment after teardown does not encounter "Router instance already configured" error