A custom docker file with rustlang tools and dependencies

Dockefile.rustlang.zig

#syntax=docker/dockerfile:1.3-labs

FROM --platform=$TARGETPLATFORM rust:1.67-alpine3.17 AS bins

ARG TARGETPLATFORM

RUN --mount=type=cache,target=/usr/local/cargo/registry \
  apk add -U --no-cache alpine-sdk gcompat go-task \
  && cargo install cargo-zigbuild

## The core builder that can be used to build rust applications
FROM --platform=$TARGETPLATFORM alpine:3.17 as final

ARG TARGETPLATFORM
ARG rust_version=1.67.1
ARG rustup_version=1.25.2
ARG user_id=1001
ARG user=builder

ENV USER_ID=$user_id \
  USER=$user \
  RUST_VERSION=$rust_version \
  RUSTUP_VERSION=$rustup_version \
  RUSTUP_HOME=/usr/local/rustup \
  CARGO_HOME=/usr/local/cargo \
  PATH=/usr/local/cargo/bin:$PATH \
  RUST_VERSION=1.67.1

COPY --from=bins /usr/bin/go-task /usr/local/bin/task

COPY --from=bins /usr/local/cargo/bin/cargo-zigbuild /usr/local/cargo/bin/

RUN apk add -U --no-cache ca-certificates sudo shadow bash curl curl-dev file musl musl-dev gcc \
   && adduser --uid $USER_ID --ingroup root --system --shell /bin/bash --disabled-password $USER;
   && echo "$USER ALL=(ALL) NOPASSWD:ALL" > /etc/sudoers.d/$USER;
   && chmod 0440 /etc/sudoers.d/$USER \
   && apkArch=$(apk --print-arch) \
   && curl -L https://ziglang.org/download/$ZIG_VERSION/zig-linux-$apkArch-$ZIG_VERSION.tar.xz | tar -J -x -C /usr/local \
   && ln -s /usr/local/zig-linux-$apkArch-$ZIG_VERSION/zig /usr/local/bin/zig ;
   ## these were copied from https://github.com/rust-lang/docker-rust/blob/master/1.67.1/alpine3.17/Dockerfile#L13-L25
   && case "$apkArch" in \
        x86_64) rustArch='x86_64-unknown-linux-musl'; rustupSha256='241a99ff02accd2e8e0ef3a46aaa59f8d6934b1bb6e4fba158e1806ae028eb25' ;; \
        aarch64) rustArch='aarch64-unknown-linux-musl'; rustupSha256='6a2691ced61ef616ca196bab4b6ba7b0fc5a092923955106a0c8e0afa31dbce4' ;; \
        *) echo >&2 "unsupported architecture: $apkArch"; exit 1 ;; \
    esac; \
    url="https://static.rust-lang.org/rustup/archive/1.25.2/${rustArch}/rustup-init"; \
    wget "$url"; \
    echo "${rustupSha256} *rustup-init" | sha256sum -c -; \
    chmod +x rustup-init; \
    ./rustup-init -y --no-modify-path --profile minimal --default-toolchain $RUST_VERSION --default-host $rustArch --target x86_64-unknown-linux-gnu \
         x86_64-unknown-linux-musl \
         aarch64-unknown-linux-musl \
         aarch64-unknown-linux-gnu
  && rm /usr/local/bin/rustup-init; \
  rm rustup-init; \
  chmod -R a+w $RUSTUP_HOME $CARGO_HOME;