Jan De Landtsheer
948a10a3ce
- Added upx package to Dockerfile.alpine build dependencies - Added optimize_binary() function to compile-components.sh - Automatically strips debug symbols from all Zero-OS binaries - Applies UPX compression with --best --lzma for maximum size reduction - Optimizes binaries in both initramfs and output directories - Shows size reduction stats (original → stripped → compressed) - Graceful fallback if UPX fails, keeping stripped version This significantly reduces initramfs size by compressing zinit, rfs, and mycelium binaries.
81 lines
1.9 KiB
Docker
81 lines
1.9 KiB
Docker
# Alpine-based Zero-OS Initramfs Builder
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FROM alpine:3.22
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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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ENV PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
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# Install build dependencies
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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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upx \
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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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openssl-libs-static \
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pkgconfig \
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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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# JSON processing for GitHub API
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jq \
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# Rustup for proper Rust musl builds
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rustup
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# Setup Rust toolchain for musl builds
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RUN rustup-init -y --default-toolchain stable && \
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. ~/.cargo/env && \
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rustup target add x86_64-unknown-linux-musl
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# Create directories
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RUN mkdir -p /build/initramfs /build/kernel /build/output /build/github /build/configs/zinit /mnt/zinit
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# Set working directory
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WORKDIR /build
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# Copy build scripts and configs
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COPY scripts/ /build/scripts/
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COPY configs/ /build/configs/
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# Make scripts executable
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RUN chmod +x /build/scripts/*.sh
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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"] |