Add special cases for .dockerignore

docker/client.py

@@ -297,6 +297,12 @@ def build(self, path=None, tag=None, quiet=False, fileobj=None,
             if os.path.exists(dockerignore):
                 with open(dockerignore, 'r') as f:
                     exclude = list(filter(bool, f.read().split('\n')))
+                    # These are handled by the docker daemon and should not be
+                    # excluded on the client
+                    if 'Dockerfile' in exclude:
+                        exclude.remove('Dockerfile')
+                    if '.dockerignore' in exclude:
+                        exclude.remove(".dockerignore")
             context = utils.tar(path, exclude=exclude)
 
         if utils.compare_version('1.8', self._version) >= 0:

tests/integration_test.py

@@ -1311,6 +1311,8 @@ def runTest(self):
         with open(os.path.join(base_dir, '.dockerignore'), 'w') as f:
             f.write("\n".join([
                 'node_modules',
+                'Dockerfile',
+                '.dockerginore',
                 '',  # empty line
             ]))
 
@@ -1329,6 +1331,8 @@ def runTest(self):
                 chunk = chunk.decode('utf-8')
             logs += chunk
         self.assertFalse('node_modules' in logs)
+        self.assertFalse('Dockerfile' in logs)
+        self.assertFalse('.dockerginore' in logs)
         self.assertTrue('not-ignored' in logs)
 
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