41 lines
1.3 KiB
Docker
41 lines
1.3 KiB
Docker
ARG TAG=dev
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ARG DOCKER_IMAGE_ROOT=monok8s
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FROM --platform=linux/amd64 ${DOCKER_IMAGE_ROOT}/kernel-build:${TAG} AS kernel
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# Selective mods
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RUN mkdir /out/selected-mods
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COPY initramfs/selective-mods.sh /
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RUN /selective-mods.sh /out/rootfs/lib/modules/$(ls /out/rootfs/lib/modules/) /out/selected-mods
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FROM --platform=linux/amd64 ${DOCKER_IMAGE_ROOT}/build-base:${TAG} AS build
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ARG BUSYBOX_VERSION
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ARG ARCH
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ARG CROSS_COMPILE
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WORKDIR /build
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RUN test -n "${BUSYBOX_VERSION}" || (echo "Please specify BUSYBOX_VERSION" >&2; exit 1); \
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test -n "${ARCH}" || (echo "Please specify ARCH" >&2; exit 1); \
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test -n "${CROSS_COMPILE}" || (echo "Please specify CROSS_COMPILE" >&2; exit 1)
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COPY packages/busybox-${BUSYBOX_VERSION}.tar.gz ./
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RUN tar -xf busybox-${BUSYBOX_VERSION}.tar.gz && mv "busybox-${BUSYBOX_VERSION}" busybox
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WORKDIR /build/busybox
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RUN make ARCH=${ARCH} CROSS_COMPILE=${CROSS_COMPILE} defconfig\
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&& sed -i 's/^# CONFIG_STATIC is not set/CONFIG_STATIC=y/' .config
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RUN make CROSS_COMPILE=${CROSS_COMPILE} -j"$(nproc)"
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RUN make CROSS_COMPILE=${CROSS_COMPILE} CONFIG_PREFIX=/out/initramfs install
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WORKDIR /out/initramfs
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COPY initramfs/init init
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RUN chmod +x init
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RUN mkdir -p bin sbin etc proc sys dev lib usr/bin usr/sbin
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COPY --from=kernel /out/selected-mods/* ./lib/
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RUN find . -print0 | cpio --null -ov --format=newc | gzip -9 > ../initramfs.cpio.gz
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