Dockerfile

FROM alpine:edge
LABEL maintainer="Ali Mosajjal <hi@n0p.me>"

ARG TARGETPLATFORM
ARG BUILDPLATFORM
ARG TARGETOS
ARG TARGETARCH

ENV REPO="github.com/mosajjal/dnsmonster"

RUN apk add --no-cache libcap-static libpcap-dev linux-headers gcc git go file musl-dev --repository http://dl-cdn.alpinelinux.org/alpine/edge/testing/

RUN git clone https://${REPO}.git /opt/dnsmonster --depth 1 \
    && cd /opt/dnsmonster \
    && git fetch --tags \
    && export LATEST_TAG=`git describe --tags --always` \
    && export GOOS=${TARGETOS} GOARCH=${TARGETARCH} CGO_ENABLED=1  \
    && go build --ldflags "-L /usr/lib/libcap.a -linkmode external -X ${REPO}/util.releaseVersion=${LATEST_TAG} -extldflags \"-static\"" ./cmd/dnsmonster

FROM scratch
COPY --from=0 /opt/dnsmonster/dnsmonster /dnsmonster
ENTRYPOINT ["/dnsmonster"]