Dockerfile

ARG image=20.04
FROM ubuntu:${image}
LABEL maintainer="Matt Godbolt <matt@godbolt.org>"
ARG image # https://docs.docker.com/engine/reference/builder/#understand-how-arg-and-from-interact

ARG DEBIAN_FRONTEND=noninteractive
RUN apt update -y -q && apt upgrade -y -q && apt update -y -q && \
    apt install -y -q \
    bison \
    bzip2 \
    curl \
    file \
    flex \
    g++ \
    gcc \
    git \
    libc6-dev-i386 \
    linux-libc-dev \
    make \
    ninja-build \
    patch \
    python3 \
    python3-dev \
    subversion \
    texinfo \
    unzip \
    wget \
    xz-utils \
    zlib1g-dev

RUN bash -c "if [[ ${image} == 18.04 ]]; then apt install -y -q python; else apt install -y -q python-is-python3; fi"

WORKDIR /root

RUN curl -sL https://github.com/Kitware/CMake/releases/download/v3.26.3/cmake-3.26.3-Linux-x86_64.tar.gz \
    | tar zxvf - -C /usr --strip-components=1

# Workaround for older clangs that expect xlocale.h
RUN ln -s /usr/include/locale.h /usr/include/xlocale.h

RUN mkdir -p /root
COPY build /root/

WORKDIR /root