diff --git a/Dockerfile b/Dockerfile
index b7a8a91..e40b8bc 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,19 @@
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+#
 FROM ubuntu:16.04
 
 RUN apt-get update && apt-get -y install git make python python3 \
     libcurl4-gnutls-dev libgnutls-dev tox python-dev python3-dev \
-    debhelper python-setuptools python-all apt-utils
+    debhelper python-setuptools python3-setuptools python-all python3-all \
+    apt-utils