102 lines
2.8 KiB
Docker
102 lines
2.8 KiB
Docker
# Multi-stage Alpine Zero-OS Builder with Smart Caching
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# Stage 1: Base build environment (cached until Alpine version changes)
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FROM alpine:3.22 AS base-builder
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# Install build dependencies (expensive, cache this layer)
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RUN apk add --no-cache \
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# Build tools
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build-base \
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linux-headers \
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cmake \
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git \
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wget \
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curl \
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cpio \
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xz \
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gzip \
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bc \
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perl \
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python3 \
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# Kernel build dependencies
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linux-lts-dev \
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linux-lts \
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elfutils-dev \
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openssl-dev \
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flex \
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bison \
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# Archive tools
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tar \
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bzip2 \
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unzip \
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# Text processing
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sed \
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grep \
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findutils \
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jq \
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# Go and Rust for source compilation
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go \
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rust \
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cargo
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# Create standard directories
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RUN mkdir -p /build/initramfs /build/kernel /build/output /build/github /build/configs/zinit /mnt/zinit /build/source /build/cache
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WORKDIR /build
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# Stage 2: Zero-OS components (cached until source repos change)
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FROM base-builder AS components-builder
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# Copy component compilation script
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COPY scripts/compile-components.sh /build/scripts/
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RUN chmod +x /build/scripts/compile-components.sh
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# Create a marker file to track component compilation
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RUN echo "$(date)" > /build/components-build-time
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# This stage will be cached unless we explicitly rebuild components
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# Stage 3: Kernel builder (cached until kernel version/config changes)
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FROM components-builder AS kernel-builder
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# Copy kernel configuration and version
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COPY configs/kernel-version /build/configs/
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COPY configs/kernel-config-generic /build/configs/
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COPY scripts/build-kernel.sh /build/scripts/
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RUN chmod +x /build/scripts/build-kernel.sh
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# Create kernel build marker
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RUN echo "Kernel: $(cat /build/configs/kernel-version)" > /build/kernel-build-marker
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# This stage caches kernel source download and basic setup
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# Stage 4: Final builder (lightweight layer for initramfs assembly)
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FROM kernel-builder AS final-builder
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# Copy all scripts and configs
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COPY scripts/ /build/scripts/
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COPY configs/ /build/configs/
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# Make all scripts executable
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RUN chmod +x /build/scripts/*.sh
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# Set build arguments
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ARG TARGETARCH=amd64
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ARG BUILDMODE=debug
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ARG MINIMAL_MODE=false
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# Set environment variables
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ENV BUILDMODE=${BUILDMODE}
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ENV TARGETARCH=${TARGETARCH}
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ENV MINIMAL_MODE=${MINIMAL_MODE}
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# Create build configuration
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RUN echo "BUILDMODE=${BUILDMODE}" > /build/build.conf && \
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echo "TARGETARCH=${TARGETARCH}" >> /build/build.conf && \
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echo "MINIMAL_MODE=${MINIMAL_MODE}" >> /build/build.conf && \
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echo "INITRAMFS_ROOT=/build/initramfs" >> /build/build.conf && \
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echo "KERNEL_DIR=/build/kernel" >> /build/build.conf && \
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echo "OUTPUT_DIR=/build/output" >> /build/build.conf && \
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echo "CONFIG_DIR=/build/configs" >> /build/build.conf
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# Default command
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CMD ["/build/scripts/build-initramfs.sh"] |