Dockerfile.espidf-toolchain

# ESP-IDF toolchain image — built once, pulled many times.
# Published to GHCR by build-espidf-toolchain.yml Action.
# Usage: docker build -f Dockerfile.espidf-toolchain -t velxio-espidf-toolchain .
FROM ubuntu:22.04

RUN apt-get update && apt-get install -y --no-install-recommends \
    git wget flex bison gperf python3 python3-pip python3-venv \
    cmake ninja-build ccache libffi-dev libssl-dev \
    libusb-1.0-0 ca-certificates \
    && rm -rf /var/lib/apt/lists/*

# Install ESP-IDF 4.4.7 (matches Arduino ESP32 core 2.0.17 / lcgamboa QEMU ROM)
RUN git clone -b v4.4.7 --recursive --depth=1 --shallow-submodules \
    https://github.com/espressif/esp-idf.git /opt/esp-idf

WORKDIR /opt/esp-idf

# Install toolchains for esp32 (Xtensa) and esp32c3 (RISC-V) only
RUN ./install.sh esp32,esp32c3

# Clean up large unnecessary files to reduce image size
RUN rm -rf .git docs examples \
    && find /root/.espressif -name '*.tar.*' -delete 2>/dev/null || true

# Install Arduino-as-component for full Arduino API support in ESP-IDF builds
RUN git clone --branch 2.0.17 --depth=1 --recursive --shallow-submodules \
    https://github.com/espressif/arduino-esp32.git /opt/arduino-esp32 \
 && rm -rf /opt/arduino-esp32/.git