diff --git a/docker/Dockerfile.envoy b/docker/Dockerfile.envoy
index afe1977..6484f4b 100644
--- a/docker/Dockerfile.envoy
+++ b/docker/Dockerfile.envoy
@@ -1,3 +1,17 @@
+# Copyright 2018 the original author or authors.
+#
+# 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 lyft/envoy:29361deae91575a1d46c7a21e913f19e75622ebe
 
 RUN apt-get update && apt-get -q install -y \