Add devcontainer and build script

.devcontainer/Dockerfile

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+FROM ubuntu:noble
+
+# Install sudo
+RUN apt update \
+    && apt install -y sudo \
+    && rm -rf /var/cache/apt/archives /var/lib/apt/lists/*
+
+# Add ubuntu user to the sudoers file
+RUN echo ubuntu ALL=\(root\) NOPASSWD:ALL > /etc/sudoers.d/ubuntu \
+    && chmod 0440 /etc/sudoers.d/ubuntu
+
+# Install dependencies for riscv-gnu-toolchain
+RUN apt update \
+    && apt install -y \
+        autoconf \
+        automake \
+        autotools-dev \
+        bc \
+        bison \
+        build-essential \
+        cmake \
+        curl \
+        flex \
+        gawk \
+        git \
+        gperf \
+        libexpat-dev \
+        libglib2.0-dev \
+        libgmp-dev \
+        libmpc-dev \
+        libmpfr-dev \
+        libslirp-dev \
+        libtool \
+        ninja-build \
+        patchutils \
+        python3 \
+        python3-pip \
+        python3-tomli \
+        texinfo \
+        zlib1g-dev \
+    && rm -rf /var/cache/apt/archives /var/lib/apt/lists/*
+
+# Install riscv-gnu-toolchain from source
+RUN git clone https://github.com/riscv/riscv-gnu-toolchain \
+    && cd riscv-gnu-toolchain \
+    && ./configure --prefix=/opt/riscv --with-arch=rv32im --with-abi=ilp32 --enable-llvm --disable-linux \
+    && make -j$(nproc) all \
+    && cd .. \
+    && rm -rf riscv-gnu-toolchain
+
+# Install dependencies for Lavinium
+RUN apt update \
+    && apt install -y \
+        binutils \
+        bzip2 \
+        coreutils \
+        findutils \
+        grep \
+        gzip \
+        libboost-all-dev \
+        libbz2-dev \
+        liblpsolve55-dev \
+        libssl-dev \
+        libxml2-dev \
+        lp-solve \
+        make \
+        sed \
+        sharutils \
+        tar \
+        unzip \
+        xz-utils \
+        zip \
+    && rm -rf /var/cache/apt/archives /var/lib/apt/lists/*
+
+# Link the lpsolve library to make it available for compilation
+RUN ln -sf /usr/lib/lp_solve/liblpsolve55.so /usr/lib/liblpsolve55.so
+
+# Install pandas to make Lavinium test.py and test_mt.py work
+RUN apt update \
+    && apt install -y \
+        python3-pandas \
+    && rm -rf /var/cache/apt/archives /var/lib/apt/lists/*
+
+# Install dependencies for llvm installer
+
+RUN apt update \
+    && apt install -y \
+        gnupg \
+        lsb-release \
+        software-properties-common \
+        wget \
+    && rm -rf /var/cache/apt/archives /var/lib/apt/lists/*
+
+# Install llvm
+RUN wget https://apt.llvm.org/llvm.sh \
+    && chmod +x llvm.sh \
+    && ./llvm.sh all \
+    && rm -rf /var/cache/apt/archives /var/lib/apt/lists/*
+
+# Add llvm to PATH
+ENV PATH="/usr/lib/llvm-20/bin:$PATH"
+
+USER ubuntu

.devcontainer/build-lavinium.sh

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+#!/bin/bash
+
+set -euo pipefail
+
+# Define build and install directories
+llvm_root=$(pwd)
+build_dir=$llvm_root/build
+install_dir=$build_dir/install
+
+mkdir -p "$build_dir"
+mkdir -p "$install_dir"
+
+# Configure CMake to build LLVM + Clang (and all LLVM tools like opt)
+cmake -G Ninja -S "$llvm_root/llvm" -B "$build_dir" \
+    -DCMAKE_INSTALL_PREFIX="$install_dir" \
+    -DCMAKE_BUILD_TYPE=Debug \
+    \
+    -DCMAKE_C_COMPILER=clang \
+    -DCMAKE_CXX_COMPILER=clang++ \
+    -DCMAKE_ASM_COMPILER=clang \
+    -DCMAKE_LINKER=lld \
+    \
+    -DLLVM_ENABLE_PROJECTS="clang;lld" \
+    -DLLVM_TARGETS_TO_BUILD="ARM;RISCV" \
+    -DLLVM_DEFAULT_TARGET_TRIPLE="riscv32-unknown-elf" \
+    -DLLVM_ENABLE_EH=ON \
+    -DLLVM_ENABLE_RTTI=ON \
+    -DLLVM_USE_SPLIT_DWARF=ON \
+    -DLLVM_OPTIMIZED_TABLEGEN=ON \
+    -DLLVM_PARALLEL_LINK_JOBS=4 \
+    -DLLVM_INSTALL_UTILS=ON \
+    -DLLVM_INCLUDE_TESTS=OFF \
+    -DLLVM_BUILD_TESTS=OFF
+
+# Build and install
+ninja -C "$build_dir" install

.devcontainer/devcontainer.json

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+{
+    "name": "lavinium-dev",
+    "build": { "dockerfile": "Dockerfile" },
+    "runArgs": [
+        "--name",
+        "lavinium-dev"
+    ]
+}