Dockerfile.linux

FROM ubuntu:22.04 as build-stage

ARG bazeliskV="v1.17.0"
ENV bazeliskVEnv=${bazeliskV}

ARG llvm="15"
ENV llvmEnv=${llvm}

ARG buildArgs=""
ENV buildArgsEnv=$buildArgs

RUN apt update && apt install wget -y

RUN echo "deb http://apt.llvm.org/jammy/ llvm-toolchain-jammy-${llvmEnv} main" | tee /etc/apt/sources.list.d/llvm.list
RUN wget -qO- https://apt.llvm.org/llvm-snapshot.gpg.key | tee /etc/apt/trusted.gpg.d/apt.llvm.org.asc

RUN apt update && apt install zip git ca-certificates clang-${llvmEnv} lld-${llvmEnv} -y

# bazel(isk)
RUN wget https://github.com/bazelbuild/bazelisk/releases/download/${bazeliskVEnv}/bazelisk-linux-$(dpkg --print-architecture) && \
    chmod +x bazelisk-linux-$(dpkg --print-architecture) && \
    mv bazelisk-linux-$(dpkg --print-architecture) /usr/local/bin/bazel

RUN groupadd -r user && useradd -m -r -g user user
WORKDIR /home/user/src
COPY . .

# Behond the absolute state of engineering
# for some reason the CC is not getting picked up
RUN ln -s $(which clang-${llvm}) /usr/bin/c++

RUN chown -R user /home/user
USER user

ENV CC=clang-${llvmEnv}
ENV CXX=clang++-${llvmEnv}
ENV LD=lld-${llvmEnv}
ENV LLVM_CONFIG=/usr/lib/llvm-${llvmEnv}/bin/llvm-config

# compile sandwich
RUN bazel build \
    --action_env=CC=$CC   \
    --action_env=CXX=$CXX \
    --action_env=LD=$LD \
    --action_env=LLVM_CONFIG=$LLVM_CONFIG \
    -c opt \
    //:export ${buildArgsEnv}

# export to separate layer for easy copy out
FROM scratch as release-stage
COPY --from=build-stage /home/user/src/bazel-bin/export.tar.bz2 /export.tar.bz2