Bump docker Python SDK version -> 2.4.2

Signed-off-by: Joffrey F <joffrey@docker.com>

compose/config/types.py

@@ -295,6 +295,7 @@ class ServicePort(namedtuple('_ServicePort', 'target published protocol mode ext
 
         if not isinstance(spec, dict):
             result = []
+            try:
                 for k, v in build_port_bindings([spec]).items():
                     if '/' in k:
                         target, proto = k.split('/', 1)
@@ -313,6 +314,9 @@ class ServicePort(namedtuple('_ServicePort', 'target published protocol mode ext
                             result.append(
                                 cls(target, pub, proto, None, None)
                             )
+            except ValueError as e:
+                raise ConfigurationError(str(e))
+
             return result
 
         return [cls(

requirements.txt

@@ -2,7 +2,7 @@ PyYAML==3.11
 backports.ssl-match-hostname==3.5.0.1; python_version < '3'
 cached-property==1.2.0
 colorama==0.3.7
-docker==2.3.0
+docker==2.4.2
 dockerpty==0.4.1
 docopt==0.6.1
 enum34==1.0.4; python_version < '3.4'

setup.py

@@ -37,7 +37,7 @@ install_requires = [
     'requests >= 2.6.1, != 2.11.0, < 2.12',
     'texttable >= 0.8.1, < 0.9',
     'websocket-client >= 0.32.0, < 1.0',
-    'docker >= 2.3.0, < 3.0',
+    'docker >= 2.4.2, < 3.0',
     'dockerpty >= 0.4.1, < 0.5',
     'six >= 1.3.0, < 2',
     'jsonschema >= 2.5.1, < 3',