Dockerfile.daemon

ARG FLATCAR_VERSION
FROM ghcr.io/cybozu/golang:1.23-jammy as builder

WORKDIR /work
COPY go.mod go.mod
COPY go.sum go.sum

COPY cmd/necoperf-daemon cmd/necoperf-daemon
COPY internal internal
RUN CGO_ENABLED=0 go build -ldflags="-w -s" -o necoperf-daemon ./cmd/necoperf-daemon

FROM ghcr.io/flatcar/flatcar-sdk-amd64:${FLATCAR_VERSION} as flatcar
RUN ldd /usr/bin/perf | cut -d" " -f3 | xargs tar --dereference -cf libs.tar

FROM scratch
LABEL org.opencontainers.image.source https://github.com/cybozu-go/necoperf
ENV HOME=/home/necoperf
COPY --from=flatcar /bin/ /bin/
COPY --from=flatcar /sbin/setcap /sbin/setcap
COPY --from=flatcar /lib64 /lib64
COPY --from=flatcar /usr/lib64 /usr/lib64
COPY --from=flatcar /usr/bin/perf /usr/bin/sleep /usr/bin/

# install perf dependency
COPY --from=flatcar /libs.tar /libs.tar
RUN mkdir -p /usr/lib64 \
    && tar -xf libs.tar \
    && rm libs.tar

COPY --from=builder /work/necoperf-daemon /usr/local/bin/necoperf-daemon

RUN setcap "cap_perfmon,cap_sys_ptrace,cap_syslog,cap_sys_admin,cap_sys_chroot=ep" /usr/bin/perf \
    && mkdir -p ${HOME} \
    && chown -R 1000:1000 ${HOME}
WORKDIR ${HOME}

USER 1000:1000
ENTRYPOINT ["/usr/local/bin/necoperf-daemon", "start"]