Dockerfile.ubuntu

# Dockerfile for building sparkplug-cpp on Ubuntu 24.04 LTS (Noble)
# This tests compatibility with older compilers that lack std::expected
FROM ubuntu:24.04

# Avoid interactive prompts during package installation
ENV DEBIAN_FRONTEND=noninteractive

# Install build dependencies
RUN apt-get update && apt-get install -y \
    build-essential \
    cmake \
    git \
    clang-18 \
    libc++-18-dev \
    libc++abi-18-dev \
    protobuf-compiler \
    libprotobuf-dev \
    libabsl-dev \
    libssl-dev \
    openssl \
    pkg-config \
    wget \
    && rm -rf /var/lib/apt/lists/*

# Build and install Eclipse Paho MQTT C library
# Ubuntu 24.04 packages may be outdated, so build from source
RUN cd /tmp && \
    git clone --depth 1 --branch v1.3.15 https://github.com/eclipse/paho.mqtt.c.git && \
    cd paho.mqtt.c && \
    cmake -Bbuild \
        -DCMAKE_BUILD_TYPE=Release \
        -DPAHO_WITH_SSL=ON \
        -DPAHO_BUILD_DOCUMENTATION=OFF \
        -DPAHO_BUILD_SAMPLES=OFF \
        -DPAHO_BUILD_STATIC=OFF \
        -DCMAKE_INSTALL_PREFIX=/usr/local && \
    cmake --build build && \
    cmake --install build && \
    rm -rf /tmp/paho.mqtt.c

# Install Mosquitto MQTT broker for testing
RUN apt-get update && apt-get install -y mosquitto && rm -rf /var/lib/apt/lists/*

# Set Clang-18 as default compiler
ENV CC=clang-18
ENV CXX=clang++-18

# Create working directory
WORKDIR /workspace

# Copy source code
COPY . .

# Configure with CMake
RUN cmake --preset default

# Build the project
RUN cmake --build build

# Create entrypoint script to start Mosquitto and run tests
RUN echo '#!/bin/bash\n\
set -e\n\
echo "Starting Mosquitto broker..."\n\
mosquitto -d\n\
sleep 2\n\
echo "Mosquitto started"\n\
exec "$@"\n\
' > /entrypoint.sh && chmod +x /entrypoint.sh

ENTRYPOINT ["/entrypoint.sh"]

# Default command: run tests
CMD ["ctest", "--test-dir", "build", "--output-on-failure"]

# Usage:
# Build: docker build -f Dockerfile.ubuntu -t sparkplug-cpp-ubuntu24 .
# Run:   docker run -it sparkplug-cpp-ubuntu24
# Test:  docker run -it sparkplug-cpp-ubuntu24 ctest --test-dir build --output-on-failure