Add kubectl for kubernetes deployment

Dockerfile

@@ -1,13 +1,21 @@
 FROM docker:stable-dind
 
 RUN apk add --update alpine-sdk
-RUN apk add --update bash python python-dev py-pip build-base openssh jq rsync
+RUN apk add --update bash python python-dev py-pip build-base openssh jq rsync gettext
 RUN apk add -U --repository http://dl-cdn.alpinelinux.org/alpine/edge/testing aufs-util
 RUN pip install docker-compose
 RUN pip install awscli
 RUN mkdir -p ~/.ssh/
 RUN echo -e "Host *\n  StrictHostKeyChecking no\n  UserKnownHostsFile=/dev/null" > ~/.ssh/config
 
+RUN curl -LO https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/linux/amd64/kubectl && \
+    chmod +x ./kubectl && \
+    mv ./kubectl /usr/local/bin/kubectl
+
+RUN curl -LO https://amazon-eks.s3-us-west-2.amazonaws.com/1.11.5/2018-12-06/bin/linux/amd64/aws-iam-authenticator && \
+    chmod +x ./aws-iam-authenticator && \
+    mv ./aws-iam-authenticator /usr/local/bin/aws-iam-authenticator
+
 COPY start.sh /etc/start.sh
 
 RUN chmod +x /etc/start.sh