bash-4.4# npm list -g dockerfile_lint
/usr/local/lib
└── dockerfile_lint@0.3.1

bash-4.4# py.test -k Docker
=============================== test session starts ===============================
platform linux -- Python 3.6.1, pytest-3.0.7, py-1.4.33, pluggy-0.4.0
rootdir: /app/coala-bears, inifile: setup.cfg
plugins: xdist-1.16.0, timeout-1.2.0, mock-1.6.0, env-0.6.0, cov-2.4.0
timeout: 35.0s method: signal
collected 798 items

tests/configfiles/DockerfileLintBearTest.py .F....

==================================== FAILURES =====================================
_____________________ DockerfileLintBearTest.test_valid_files _____________________

self = <coalib.testing.LocalBearTestHelper.verify_local_bear.<locals>.LocalBearTest testMethod=test_valid_files>

    def test_valid_files(self):
        self.assertIsInstance(valid_files, (list, tuple))
        for file in valid_files:
            self.check_validity(self.uut,
                                file.splitlines(keepends=True),
                                filename,
                                valid=True,
                                force_linebreaks=force_linebreaks,
                                create_tempfile=create_tempfile,
>                               tempfile_kwargs=tempfile_kwargs)

/usr/lib/python3.6/site-packages/coala-0.12.0.dev99999999999999-py3.6.egg/coalib/testing/LocalBearTestHelper.py:365:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
/usr/lib/python3.6/site-packages/coala-0.12.0.dev99999999999999-py3.6.egg/coalib/testing/LocalBearTestHelper.py:165: in check_validity
    settings=settings,
/usr/lib/python3.6/site-packages/coala-0.12.0.dev99999999999999-py3.6.egg/coalib/testing/LocalBearTestHelper.py:266: in check_results
    self.assertComparableObjectsEqual(bear_output, results)
/usr/lib/python3.6/site-packages/coala-0.12.0.dev99999999999999-py3.6.egg/coalib/testing/LocalBearTestHelper.py:134: in assertComparableObjectsEqual
    self.assertEqual(observed_result, expected_result)
E   AssertionError: Lists differ: [<Result object(id=0x14239a4ac3ec460fa9f3e[417 chars]7b8>] != []
E
E   First list contains 1 additional elements.
E   First extra element 0:
E   <Result object(id=0x14239a4ac3ec460fa9f3efb87909caff, origin='DockerfileLintBear', affected_code=(<SourceRange object(start=<SourcePosition object(file='/tmp/tmp02vprv8j', line=3, column=None) at 0x7efd55c5c438>, end=<SourcePosition object(file='/tmp/tmp02vprv8j', line=3, column=None) at 0x7efd55c5cba8>) at 0x7efd55c5c470>,), severity=INFO, confidence=100, message='the MAINTAINER command is deprecated', aspect=NoneType, applied_actions={}) at 0x7efd55c5c7b8>
E
E   - [<Result object(id=0x14239a4ac3ec460fa9f3efb87909caff, origin='DockerfileLintBear', affected_code=(<SourceRange object(start=<SourcePosition object(file='/tmp/tmp02vprv8j', line=3, column=None) at 0x7efd55c5c438>, end=<SourcePosition object(file='/tmp/tmp02vprv8j', line=3, column=None) at 0x7efd55c5cba8>) at 0x7efd55c5c470>,), severity=INFO, confidence=100, message='the MAINTAINER command is deprecated', aspect=NoneType, applied_actions={}) at 0x7efd55c5c7b8>]
E   + []
============================= pytest-warning summary ==============================
WC1 /app/coala-bears/tests/natural_language/LanguageToolBearTest.py cannot collect test class 'SkipTest' because it has a __init__ constructor
============================== 792 tests deselected ===============================
===== 1 failed, 5 passed, 792 deselected, 1 pytest-warnings in 18.76 seconds ======
bash-4.4# npm install -g dockerfile_lint@0.2.7
/usr/local/bin/dockerfile_lint -> /usr/local/lib/node_modules/dockerfile_lint/bin/dockerfile_lint
/usr/local/lib
└── dockerfile_lint@0.2.7

bash-4.4# npm list -g dockerfile_lint
/usr/local/lib
└── dockerfile_lint@0.2.7

bash-4.4# py.test -k Docker
=============================== test session starts ===============================
platform linux -- Python 3.6.1, pytest-3.0.7, py-1.4.33, pluggy-0.4.0
rootdir: /app/coala-bears, inifile: setup.cfg
plugins: xdist-1.16.0, timeout-1.2.0, mock-1.6.0, env-0.6.0, cov-2.4.0
timeout: 35.0s method: signal
collected 798 items

tests/configfiles/DockerfileLintBearTest.py ......

============================= pytest-warning summary ==============================
WC1 /app/coala-bears/tests/natural_language/LanguageToolBearTest.py cannot collect test class 'SkipTest' because it has a __init__ constructor
============================== 792 tests deselected ===============================
========== 6 passed, 792 deselected, 1 pytest-warnings in 18.73 seconds ===========
bash-4.4#