Eight tests: compose file exists, docker compose config validates, services declare required volumes/restart/healthcheck/ports/depends_on, secrets and volumes tables include the names the operator expects, backend wires CYCLONE_BACKUP_AUTOSTART=1, both Dockerfiles pass . The live bring-up test (compose up + wait for healthy) is gated on DOCKER_TESTS=1 so it skips on bare CI. PyYAML was already a hard dep.