Initial commit: Alpine Zero-OS initramfs build system with cleaned Docker configuration

2025-08-15 22:11:44 +02:00
commit 9b14d94bbe
34 changed files with 12864 additions and 0 deletions
--- a/build/Dockerfile.cached
+++ b/build/Dockerfile.cached
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+# Multi-stage Alpine Zero-OS Builder with Smart Caching
+# Stage 1: Base build environment (cached until Alpine version changes)
+FROM alpine:3.22 AS base-builder
+
+# Install build dependencies (expensive, cache this layer)
+RUN apk add --no-cache \
+    # Build tools
+    build-base \
+    linux-headers \
+    cmake \
+    git \
+    wget \
+    curl \
+    cpio \
+    xz \
+    gzip \
+    bc \
+    perl \
+    python3 \
+    # Kernel build dependencies
+    linux-lts-dev \
+    linux-lts \
+    elfutils-dev \
+    openssl-dev \
+    flex \
+    bison \
+    # Archive tools
+    tar \
+    bzip2 \
+    unzip \
+    # Text processing
+    sed \
+    grep \
+    findutils \
+    jq \
+    # Go and Rust for source compilation
+    go \
+    rust \
+    cargo
+
+# Create standard directories
+RUN mkdir -p /build/initramfs /build/kernel /build/output /build/github /build/configs/zinit /mnt/zinit /build/source /build/cache
+
+WORKDIR /build
+
+# Stage 2: Zero-OS components (cached until source repos change)
+FROM base-builder AS components-builder
+
+# Copy component compilation script
+COPY scripts/compile-components.sh /build/scripts/
+RUN chmod +x /build/scripts/compile-components.sh
+
+# Create a marker file to track component compilation
+RUN echo "$(date)" > /build/components-build-time
+
+# This stage will be cached unless we explicitly rebuild components
+
+# Stage 3: Kernel builder (cached until kernel version/config changes)  
+FROM components-builder AS kernel-builder
+
+# Copy kernel configuration and version
+COPY configs/kernel-version /build/configs/
+COPY configs/kernel-config-generic /build/configs/
+COPY scripts/build-kernel.sh /build/scripts/
+RUN chmod +x /build/scripts/build-kernel.sh
+
+# Create kernel build marker
+RUN echo "Kernel: $(cat /build/configs/kernel-version)" > /build/kernel-build-marker
+
+# This stage caches kernel source download and basic setup
+
+# Stage 4: Final builder (lightweight layer for initramfs assembly)
+FROM kernel-builder AS final-builder
+
+# Copy all scripts and configs
+COPY scripts/ /build/scripts/
+COPY configs/ /build/configs/
+
+# Make all scripts executable
+RUN chmod +x /build/scripts/*.sh
+
+# Set build arguments
+ARG TARGETARCH=amd64
+ARG BUILDMODE=debug
+ARG MINIMAL_MODE=false
+
+# Set environment variables
+ENV BUILDMODE=${BUILDMODE}
+ENV TARGETARCH=${TARGETARCH}
+ENV MINIMAL_MODE=${MINIMAL_MODE}
+
+# Create build configuration
+RUN echo "BUILDMODE=${BUILDMODE}" > /build/build.conf && \
+    echo "TARGETARCH=${TARGETARCH}" >> /build/build.conf && \
+    echo "MINIMAL_MODE=${MINIMAL_MODE}" >> /build/build.conf && \
+    echo "INITRAMFS_ROOT=/build/initramfs" >> /build/build.conf && \
+    echo "KERNEL_DIR=/build/kernel" >> /build/build.conf && \
+    echo "OUTPUT_DIR=/build/output" >> /build/build.conf && \
+    echo "CONFIG_DIR=/build/configs" >> /build/build.conf
+
+# Default command
+CMD ["/build/scripts/build-initramfs.sh"]