Repo setup first commit

Dockerfile-ubuntu26.04.dockerfile

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+FROM ubuntu:24.04
+
+LABEL maintainer="legatus-team"
+LABEL description="Ubuntu 24.04 build environment for Legatus LTS DEB builds"
+
+# Prevent interactive prompts during package installation
+ENV DEBIAN_FRONTEND=noninteractive
+ENV TZ=Europe/Berlin
+
+# Install base build dependencies
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    build-essential \
+    cmake \
+    ninja-build \
+    git \
+    curl \
+    wget \
+    python3 \
+    python3-pip \
+    python3-setuptools \
+    libgl1-mesa-dev \
+    libglu1-mesa-dev \
+    libxcb-cursor0 \
+    libxcb-icccm4 \
+    libxcb-image0 \
+    libxcb-keysyms1 \
+    libxcb-randr0 \
+    libxcb-render-util0 \
+    libxcb-shape0 \
+    libxcb-xfixes0 \
+    libxcb-xinerama0 \
+    libxcb-xkb1 \
+    libxkbcommon-x11-0 \
+    libdbus-1-3 \
+    libfontconfig1 \
+    libfreetype6 \
+    libharfbuzz0b \
+    ca-certificates \
+    gnupg \
+    lsb-release \
+    software-properties-common \
+    pkg-config \
+    libudev-dev \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install Qt6 from host mount or pre-installed location
+# Qt6 is NOT installed in this image due to licensing/download requirements
+# Mount Qt6 installation at runtime:
+#   docker run -v /opt/Qt:/opt/Qt -e CMAKE_PREFIX_PATH=/opt/Qt/6.8.2/gcc_64/lib/cmake ...
+# See README-ubuntu-docker.md for installation options
+
+# Install additional development libraries (common dependencies)
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    libboost-all-dev \
+    libjson-glib-dev \
+    libgeographic-dev \
+    libpq-dev \
+    libssl-dev \
+    libcurl4-openssl-dev \
+    libxml2-dev \
+    libxslt1-dev \
+    zlib1g-dev \
+    libbz2-dev \
+    liblzma-dev \
+    libzstd-dev \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install clang-tidy and LLVM tools for code quality checks
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    clang-tidy \
+    clang-format \
+    clang-tools \
+    llvm \
+    && rm -rf /var/lib/apt/lists/*
+
+# Set up rpmbuild directory structure (for compatibility with existing scripts)
+RUN mkdir -p /home/builder/rpmbuild/{BUILD,BUILDROOT,RPMS,SOURCES,SPECS,SRPMS} && \
+    echo "%_topdir /home/builder/rpmbuild" > /home/builder/.rpmmacros
+
+# Create non-root builder user
+RUN useradd -m -u 1000 builder && \
+    chown -R builder:builder /home/builder
+
+# Set working directory
+WORKDIR /workspace
+
+# Default command
+CMD ["/bin/bash"]