COMAC-182 Create Dockerfile and Makefile for OMEC pod init image

Change-Id: Ibca65ef85b2c65f9549a8c9375d2bd2fade45128
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..3eaf104
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,24 @@
+# Copyright 2019-present Open Networking Foundation
+#
+# 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 alpine as pod-init
+ARG KUBE_VERSION="v1.15.3"
+
+RUN apk update && apk add jq iptables bind-tools iproute2 iputils bash
+RUN apk add --update ca-certificates \
+ && apk add --update -t deps curl \
+ && curl -L https://storage.googleapis.com/kubernetes-release/release/${KUBE_VERSION}/bin/linux/amd64/kubectl -o /usr/local/bin/kubectl \
+ && chmod +x /usr/local/bin/kubectl \
+ && apk del --purge deps \
+ && rm /var/cache/apk/*