ARG IMAGE
FROM ${IMAGE} AS ksrc
FROM linuxkit/alpine:6264e5b39af8eb1da7ffa4c05a7ccc597da01197 AS build
RUN apk add \
    attr-dev \
    autoconf \
    automake \
    build-base \
    file \
    git \
    libtirpc-dev \
    libtool \
    mpc1-dev \
    mpfr-dev \
    util-linux-dev \
    zlib-dev

COPY --from=ksrc /kernel-dev.tar /
RUN tar xf kernel-dev.tar

# Also extract the kernel modules
COPY --from=ksrc /kernel.tar /
RUN tar xf kernel.tar

# Note: ZFS and SPL commits must match. It's unclear how much the user
# space tools must match the kernel module version. The current zfs
# package on Alpine is 0.6.5.9. We pick 0.6.5.10 because it has
# support for 4.12 based kernels.
ENV VERSION=0.6.5.10

ENV SPL_REPO=https://github.com/zfsonlinux/spl.git
ENV SPL_COMMIT=spl-${VERSION}
RUN git clone ${SPL_REPO} && \
    cd spl && \
    git checkout ${SPL_COMMIT}

ENV ZFS_REPO=https://github.com/zfsonlinux/zfs.git
ENV ZFS_COMMIT=zfs-${VERSION}
RUN git clone ${ZFS_REPO} && \
    cd zfs && \
    git checkout ${ZFS_COMMIT}

WORKDIR /spl
RUN ./autogen.sh && \
    ./configure && \
    cd module && \
    make && \
    make install

WORKDIR /zfs
RUN ./autogen.sh && \
    ./configure --with-spl=/spl && \
    cd module && \
    make -j "$(getconf _NPROCESSORS_ONLN)" && \
    make install

# Run depmod against the new module directory.
RUN cd /lib/modules && \
    depmod -ae * 

FROM scratch
ENTRYPOINT []
CMD []
WORKDIR /
COPY --from=build /lib/modules/ /lib/modules/