FROM ubuntu:focal
ARG DEBIAN_FRONTEND=noninteractive
ARG TARGETARCH

SHELL ["/bin/bash", "-c"]
USER root
WORKDIR /root

ENV CLANG_VERSION=16

RUN apt update -qq \
    && apt install -qq -y --no-install-recommends --no-install-suggests \
    wget software-properties-common gnupg

RUN wget https://apt.llvm.org/llvm.sh \
    && chmod +x llvm.sh \
    && ./llvm.sh ${CLANG_VERSION} \
    && rm -rf llvm.sh \
    && apt-get install -y libc++-16-dev libc++abi-16-dev