# Dockerfile for OpenWrt-Yocto Build Environment
#
# Yocto Project does NOT natively support macOS.
# This Dockerfile provides an Ubuntu-based container with all
# required build dependencies for Yocto/OpenEmbedded builds.
#
# Based on Yocto Project Scarthgap (5.0) system requirements:
# https://docs.yoctoproject.org/ref-manual/system-requirements.html

FROM ubuntu:24.04

# Prevent interactive prompts during package installation
ENV DEBIAN_FRONTEND=noninteractive

# Install all required Yocto build host packages (from poky/documentation/poky.yaml.in)
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    chrpath \
    cpio \
    debianutils \
    diffstat \
    file \
    gawk \
    gcc \
    git \
    iputils-ping \
    libacl1 \
    liblz4-tool \
    locales \
    python3 \
    python3-git \
    python3-jinja2 \
    python3-pexpect \
    python3-pip \
    python3-subunit \
    socat \
    texinfo \
    unzip \
    wget \
    xz-utils \
    zstd \
    # Additional useful tools
    sudo \
    vim \
    nano \
    less \
    bash-completion \
    && rm -rf /var/lib/apt/lists/*

# Set up locale (required by Yocto)
RUN locale-gen en_US.UTF-8 && update-locale LANG=en_US.UTF-8
ENV LANG=en_US.UTF-8
ENV LC_ALL=en_US.UTF-8

# Create a non-root user to match macOS host user (builds should not run as root)
ARG USER_UID=1000
ARG USER_GID=1000
RUN groupadd -g ${USER_GID} builduser && \
    useradd -m -u ${USER_UID} -g builduser -s /bin/bash builduser && \
    echo "builduser ALL=(ALL) NOPASSWD:ALL" >> /etc/sudoers

# Create working directory
RUN mkdir -p /workspace && chown builduser:builduser /workspace

# Switch to non-root user
USER builduser
WORKDIR /workspace

# Set Git safe directory (since the mounted volume may have different ownership)
RUN git config --global --add safe.directory /workspace

ENTRYPOINT ["/bin/bash"]