Make sure the build path we pass to docker-py is a binary string

Signed-off-by: Aanand Prasad <aanand.prasad@gmail.com>

compose/service.py

@@ -462,8 +462,10 @@ class Service(object):
     def build(self, no_cache=False):
         log.info('Building %s...' % self.name)
 
+        path = six.binary_type(self.options['build'])
+
         build_output = self.client.build(
-            self.options['build'],
+            path=path,
             tag=self.full_name,
             stream=True,
             rm=True,

tests/integration/service_test.py

@@ -4,6 +4,10 @@ import os
 from os import path
 import mock
 
+import tempfile
+import shutil
+import six
+
 from compose import Service
 from compose.service import (
     CannotBeScaledError,
@@ -404,6 +408,29 @@ class ServiceTest(DockerClientTestCase):
         self.assertEqual(list(container['NetworkSettings']['Ports'].keys()), ['8000/tcp'])
         self.assertNotEqual(container['NetworkSettings']['Ports']['8000/tcp'][0]['HostPort'], '8000')
 
+    def test_build(self):
+        base_dir = tempfile.mkdtemp()
+        self.addCleanup(shutil.rmtree, base_dir)
+
+        with open(os.path.join(base_dir, 'Dockerfile'), 'w') as f:
+            f.write("FROM busybox\n")
+
+        self.create_service('web', build=base_dir).build()
+        self.assertEqual(len(self.client.images(name='composetest_web')), 1)
+
+    def test_build_non_ascii_filename(self):
+        base_dir = tempfile.mkdtemp()
+        self.addCleanup(shutil.rmtree, base_dir)
+
+        with open(os.path.join(base_dir, 'Dockerfile'), 'w') as f:
+            f.write("FROM busybox\n")
+
+        with open(os.path.join(base_dir, b'foo\xE2bar'), 'w') as f:
+            f.write("hello world\n")
+
+        self.create_service('web', build=six.text_type(base_dir)).build()
+        self.assertEqual(len(self.client.images(name='composetest_web')), 1)
+
     def test_start_container_stays_unpriviliged(self):
         service = self.create_service('web')
         container = create_and_start_container(service).inspect()

tests/integration/testcases.py

@@ -22,7 +22,8 @@ class DockerClientTestCase(unittest.TestCase):
                 self.client.remove_image(i)
 
     def create_service(self, name, **kwargs):
-        kwargs['image'] = kwargs.pop('image', 'busybox:latest')
+        if 'image' not in kwargs and 'build' not in kwargs:
+            kwargs['image'] = 'busybox:latest'
 
         if 'command' not in kwargs:
             kwargs['command'] = ["/bin/sleep", "300"]