python-testcontainers-setup

Use this when authoring integration tests against a real backend (PostgreSQL, Redis, Kafka, MinIO, NATS, MongoDB), debugging slow or flaky container-backed tests, gating tests on Docker availability, or capturing container logs on failure. Covers session-scoped fixtures, state reset between tests (TRUNCATE / transactional rollback / per-test schema), the @pytest.mark.integration marker plus pytest_collection_modifyitems Docker gate, healthcheck/wait policies, log dumping via request.addfinalizer, image version pinning, dynamic port discovery, TC_REUSE for dev iteration, DOCKER_HOST discovery, and per-service connection-URL recipes. Triggers: testcontainers, PostgresContainer, RedisContainer, KafkaContainer, MinioContainer, MongoDbContainer, NatsContainer, docker, integration, @pytest.mark.integration.