style: pre-commit.ci auto fixes [...]

Author: pre-commit-ci[bot]

test/test_docker.py

@@ -59,10 +59,12 @@ def test_build_image_no_tag(capsys, mock_docker_build):
 
 def test_build_image_error(capsys, mock_docker_build):
     m_stream, m_run = mock_docker_build
+
     def mock_run(*popenargs, check=False, **kwargs):
         if check:
             raise docker.subprocess.CalledProcessError(1, popenargs)
         return 1
+
     m_run.side_effect = mock_run
     image = "hello-world"