Make sure the exit status gets passed along

azure-pipelines.yml

@@ -62,7 +62,7 @@ steps:
 - script: pip install -e .
   displayName: 'Install repo2docker'
 
-- script: pushd tests; pytest --durations 10 --cov repo2docker -v $(REPO_TYPE); popd
+- script: pushd tests && pytest --durations 10 --cov repo2docker -v $(REPO_TYPE) && popd
   displayName: 'Run tests $(REPO_TYPE)'
 
 - script: |

tests/unit/test_app.py

@@ -11,6 +11,10 @@ from repo2docker.__main__ import make_r2d
 from repo2docker.utils import chdir
 
 
+def test_always_fails():
+    assert False
+
+
 def test_find_image():
     images = [{"RepoTags": ["some-org/some-repo:latest"]}]