FROM linuxkit/alpine:0c069d0fd7defddb6e03925fcd4915407db0c9e1 AS mirror

RUN apk add --no-cache go musl-dev
ENV GOPATH=/go PATH=$PATH:/go/bin GO111MODULE=off
# Hack to work around an issue with go on arm64 requiring gcc
RUN [ $(uname -m) = aarch64 ] && apk add --no-cache gcc || true

COPY main.go /go/src/sysctl/
RUN go-compile.sh /go/src/sysctl

FROM scratch
ENTRYPOINT []
CMD []
WORKDIR /
COPY --from=mirror /go/bin/sysctl /usr/bin/sysctl
COPY etc/ /etc/
CMD ["/usr/bin/sysctl"]