FROM alpine:3.7 as builder
RUN apk add -U curl
RUN curl -Lo checkup.tar.gz https://github.com/sourcegraph/checkup/releases/download/v0.2.0/checkup_linux_amd64.tar.gz
RUN tar -xzf checkup.tar.gz && rm checkup.tar.gz

FROM scratch as production
COPY --from=builder /checkup/checkup /usr/bin/checkup
WORKDIR /checkup
ENTRYPOINT ["checkup"]