Use "local" label for local directory

repo2docker/app.py

@@ -745,8 +745,10 @@ class Repo2Docker(Application):
                     picked_buildpack = self.default_buildpack()
 
                 picked_buildpack.appendix = self.appendix
+                # Add metadata labels
                 picked_buildpack.labels['repo2docker.version'] = self.version
-                picked_buildpack.labels['repo2docker.repo'] = self.repo
+                repo_label = 'local' if os.path.isdir(self.repo) else self.repo
+                picked_buildpack.labels['repo2docker.repo'] = repo_label
                 picked_buildpack.labels['repo2docker.ref'] = self.ref
 
                 self.log.debug(picked_buildpack.render(),

tests/test_labels.py

@@ -1,12 +1,14 @@
 """
 Test if labels are supplied correctly to the container
 """
-import time
-from unittest.mock import Mock
 from repo2docker.app import Repo2Docker
 from repo2docker.buildpacks import BuildPack
 from repo2docker import __version__
 import pytest
+from unittest.mock import Mock
+
+
+URL = "https://github.com/binderhub-ci-repos/repo2docker-ci-clone-depth"
 
 
 def test_buildpack_labels_rendered():
@@ -18,9 +20,14 @@ def test_buildpack_labels_rendered():
     assert 'LABEL second_label="anotherlabel"\n' in bp.render()
 
 
-@pytest.mark.parametrize('ref', ['some-branch', None])
-def test_labels(ref, tmpdir):
-    repo = str(tmpdir)
+@pytest.mark.parametrize('ref, repo, expected_repo_label', [
+    (None, URL, URL),
+    ('some-ref', None, 'local'),
+    (None, None, 'local'),
+])
+def test_Repo2Docker_labels(ref, repo, expected_repo_label, tmpdir):
+    if repo is None:
+        repo = str(tmpdir)
     if ref is not None:
         argv = ['--ref', ref, repo]
     else:
@@ -38,7 +45,7 @@ def test_labels(ref, tmpdir):
     app.start()
     expected_labels = {
         'repo2docker.ref': ref,
-        'repo2docker.repo': repo,
+        'repo2docker.repo': expected_repo_label,
         'repo2docker.version': __version__,
     }