Merge pull request #133 from UKHomeOffice/update-kubectl

Update kubectl version to v1.15.7

Author: oyelekci

Dockerfile

@@ -1,10 +1,10 @@
-FROM alpine:3.10
+FROM alpine:3.11
 
 RUN apk upgrade --no-cache
 RUN apk add --no-cache ca-certificates openssl bash
 RUN update-ca-certificates
 
-RUN wget https://storage.googleapis.com/kubernetes-release/release/v1.14.5/bin/linux/amd64/kubectl \
+RUN wget https://storage.googleapis.com/kubernetes-release/release/v1.15.7/bin/linux/amd64/kubectl \
   -O /usr/bin/kubectl && chmod +x /usr/bin/kubectl
 
 COPY bin/kd_linux_amd64 /bin/kd