building zig devcontainer

devcontainer.json

{
  "name": "Zig",
  "dockerFile": "Dockerfile",
  "settings": {},
  "runArgs": [ "--cap-add=SYS_PTRACE", "--security-opt", "seccomp=unconfined", "--volume=${localWorkspaceFolder}:/workspaces/${localWorkspaceFolderBasename}:Z" ],
  "workspaceMount": "",
  "remoteUser": "vscode",
  "features": {
    "git": "os-provided"
  },
  "postStartCommand": "mkdir -p build && cd build && cmake .. -DCMAKE_PREFIX_PATH=/usr/lib/llvm-15 && make",
  "extensions": [
    "ms-vscode.cmake-tools",
    "llvm-vs-code-extensions.vscode-clangd"
  ]
}

Dockerfile

FROM mcr.microsoft.com/vscode/devcontainers/base:0-bullseye

RUN echo "deb http://apt.llvm.org/bullseye/ llvm-toolchain-bullseye-15 main" >> /etc/apt/sources.list\
 && curl -sL https://apt.llvm.org/llvm-snapshot.gpg.key | apt-key add -\
 && apt-get update\
 && apt-get -y install --no-install-recommends\
    llvm-15-dev\
    libclang-15-dev\
    clang-15\
    liblld-15-dev\
    zlib1g-dev \
    cmake\
    make\
    gdb\
    strace\
    valgrind

A more generic 'non devcontainer' dockerfile for llvm-${VERSION} builds of zig:

FROM docker.io/debian:bookworm-slim
ARG LLVM_VERSION=17
RUN apt update\
 && apt -y install --no-install-recommends\
    gnupg\
    ca-certificates\
    curl
RUN . /etc/os-release\
 && echo "deb http://apt.llvm.org/${VERSION_CODENAME}/ llvm-toolchain-${VERSION_CODENAME}-${LLVM_VERSION} main" >> /etc/apt/sources.list\
 && curl -sL https://apt.llvm.org/llvm-snapshot.gpg.key | apt-key add -\
 && apt update\
 && apt -y install --no-install-recommends\
    llvm-${LLVM_VERSION}-dev\
    libclang-${LLVM_VERSION}-dev\
    clang-${LLVM_VERSION}\
    liblld-${LLVM_VERSION}-dev\
    zlib1g-dev \
    cmake\
    make

# podman build . -t llvm && podman run --rm -it -v .:/tmp/zig:Z,rw llvm bash
# cd /tmp/zig; mkdir -p build && cd build && cmake .. -DCMAKE_PREFIX_PATH=/usr/lib/llvm-17 && make