ARG ALPINE_VERSION

FROM alpine:${ALPINE_VERSION}

ARG OS
ARG ARCH
ARG KUBERNETES_RELEASE

RUN apk --no-cache add --update curl ca-certificates bash

RUN curl -Lo /usr/local/bin/kubectl \
	https://storage.googleapis.com/kubernetes-release/release/${KUBERNETES_RELEASE}/bin/${OS}/${ARCH}/kubectl

RUN chmod +x /usr/local/bin/kubectl

COPY kubectl-setup /bin/
RUN chmod +x /bin/kubectl-setup

CMD [ "/bin/kubectl-setup" ]
ENTRYPOINT [ "/bin/bash", "-l", "-c" ]