Init Repo

Dockerfile

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+FROM ubuntu:22.04
+
+# Prevent interactive prompts during package installation
+ENV DEBIAN_FRONTEND=noninteractive
+ENV LANG=C.UTF-8
+
+# Install official OpenWrt build dependencies
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    build-essential \
+    ca-certificates \
+    clang \
+    cpio \
+    curl \
+    file \
+    gawk \
+    gettext \
+    git \
+    libelf-dev \
+    libglib2.0-dev \
+    libncurses5-dev \
+    libncursesw5-dev \
+    libssl-dev \
+    python3 \
+    python3-dev \
+    python3-pip \
+    python3-ply \
+    python3-pyelftools \
+    python3-setuptools \
+    rsync \
+    subversion \
+    swig \
+    time \
+    unzip \
+    wget \
+    zlib1g-dev \
+    sudo \
+    && rm -rf /var/lib/apt/lists/*
+
+# Create a non-root build user (OpenWrt requires building as non-root)
+RUN useradd -m -s /bin/bash builduser && \
+    echo "builduser ALL=(ALL) NOPASSWD:ALL" >> /etc/sudoers
+
+USER builduser
+WORKDIR /home/builduser
+
+# Clone target OpenWrt release (change branch as needed)
+ARG OPENWRT_BRANCH=openwrt-25.12
+RUN git clone --depth 1 -b ${OPENWRT_BRANCH} https://git.openwrt.org/openwrt/openwrt.git openwrt
+
+WORKDIR /home/builduser/openwrt
+
+RUN echo "src-git ha_cluster https://github.com/pgaufillet/openwrt-ha-feed.git" >> feeds.conf.default
+
+# Update and install default package feeds
+RUN ./scripts/feeds update -a && \
+    ./scripts/feeds install -a
+
+RUN echo "CONFIG_TARGET_x86=y" > .config && \
+    echo "CONFIG_TARGET_x86_64=y" >> .config && \
+    echo "CONFIG_PACKAGE_dnsmasq-ha=y" >> .config && \
+    echo "CONFIG_PACKAGE_lease-sync=y" >> .config && \
+    echo "CONFIG_PACKAGE_owsync=y" >> .config && \
+    echo "CONFIG_PACKAGE_ha-cluster=y" >> .config && \
+    echo "CONFIG_PACKAGE_luci-app-ha-cluster=y" >> .config && \
+    sed -i 's/CONFIG_PACKAGE_dnsmasq=y/# CONFIG_PACKAGE_dnsmasq is not set/' .config && \
+    make defconfig
+
+RUN make -j$(nproc) download
+RUN make -j$(nproc) V=s
+
+CMD ["/bin/bash"]

README.md

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+Setup:
+
+mkdir -p bin dl
+touch .config
+
+chown -R 1000:1000 bin dl .config
+
+docker compose up -d
+
+
+Making changes:
+
+Configure OpenWrt:
+docker compose exec -it openwrt-builder make menuconfig
+Download target source files:
+docker compose exec -it openwrt-builder make -j$(nproc) download
+Compile firmware:
+docker compose exec -it openwrt-builder make -j$(nproc) V=s
+

docker-compose.yaml

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+version: '3.8'
+
+services:
+  openwrt-build:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    container_name: openwrt-build
+#    image: openwrt-build:latest
+    user: "1000:1000"
+    tty: true
+    stdin_open: true
+    volumes:
+      # Firmware outputs mapped directly to host filesystem
+      - ./bin:/home/builduser/openwrt/bin
+      # Source tarballs cached on host to avoid re-downloading across builds
+      - ./dl:/home/builduser/openwrt/dl
+      # Persistent build configuration file (.config)
+      - ./.config:/home/builduser/openwrt/.config
+      # Named volumes for heavy build artifacts (maximizes I/O performance)
+      - openwrt-build-dir:/home/builduser/openwrt/build_dir
+      - openwrt-staging-dir:/home/builduser/openwrt/staging_dir
+      - openwrt-ccache:/home/builduser/.ccache
+
+volumes:
+  openwrt-build-dir:
+  openwrt-staging-dir:
+  openwrt-ccache: