Dockerfile.monitor

# syntax=docker/dockerfile:latest

FROM --platform=$BUILDPLATFORM golang:1.23-bullseye AS builder

WORKDIR /workspace
COPY go.mod go.sum ./
RUN go mod download

# Copy the go source
COPY Makefile.build Makefile
COPY cmd/device-monitor cmd/device-monitor
COPY pkg pkg


ARG TARGETOS TARGETARCH TARGETVARIANT
RUN if [[ -n "${TARGETVARIANT}" ]]; then export GOARM=${TARGETVARIANT}; fi
# Build
RUN --mount=type=cache,target=/root/.cache/go-build GOOS=$TARGETOS GOARCH=$TARGETARCH \
    DEVICE_MONITOR_BUILD_OUTPUT_PATH=/build/bin/device-monitor \
    make device-monitor

FROM debian:buster-slim
LABEL org.opencontainers.image.source https://github.com/janekbaraniewski/kubeserial

ENV container docker
ENV LC_ALL C

RUN sed -i 's/# dev/dev/g' /etc/apt/sources.list

RUN apt-get update \
    && apt-get install -y systemd udev \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*

RUN cd /lib/systemd/system/sysinit.target.wants/ \
    && ls | grep -v systemd-tmpfiles-setup | xargs rm -f $1

RUN rm -f /lib/systemd/system/multi-user.target.wants/* \
    /etc/systemd/system/*.wants/* \
        /lib/systemd/system/local-fs.target.wants/* \
        /lib/systemd/system/sockets.target.wants/*udev* \
        /lib/systemd/system/sockets.target.wants/*initctl* \
        /lib/systemd/system/basic.target.wants/* \
        /lib/systemd/system/anaconda.target.wants/* \
        /lib/systemd/system/plymouth* \
        /lib/systemd/system/systemd-update-utmp*

COPY --from=builder /build/bin/device-monitor /go/bin/device-monitor

VOLUME [ "/sys/fs/cgroup" ]
CMD ["/lib/systemd/systemd-udevd"]