VOL-1398: Adtran-ONU - Initial containerization commit

Change-Id: I7afcc1ad65b9ef80da994b0b0ddf74860911bb46
diff --git a/docker/Dockerfile.adapter_adtran_onu b/docker/Dockerfile.adapter_adtran_onu
new file mode 100644
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+# Copyright 2019 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.
+ARG TAG=latest
+ARG REGISTRY=
+ARG REPOSITORY=
+
+FROM ${REGISTRY}${REPOSITORY}voltha-adtran-base:${TAG}
+
+MAINTAINER Voltha Community <info@opennetworking.org>
+
+# Adtran specific
+COPY adapters/adtran_olt /voltha/adapters/adtran_onu
+
+# Exposing process and default entry point
+CMD ["python", "/voltha/adapters/adtran_onu/main.py"]