Add support for log-driver in docker-compose.yml

Closes #1303

Signed-off-by: Vincent Demeester <vincent@sbr.pm>

compose/container.py

@@ -83,6 +83,10 @@ class Container(object):
     def labels(self):
         return self.get('Config.Labels') or {}
 
+    @property
+    def log_config(self):
+        return self.get('HostConfig.LogConfig') or None
+
     @property
     def human_readable_state(self):
         if self.is_running: