FROM alpine:3.12

RUN apk add --no-cache \
        ca-certificates \
        gcc

ARG VERSION=1.48.0

ENV RUSTUP_HOME=/usr/local/rustup \
    CARGO_HOME=/usr/local/cargo \
    PATH=/usr/local/cargo/bin:$PATH \
    RUST_VERSION=${VERSION}

RUN set -eux; \
    apkArch="$(apk --print-arch)"; \
    case "$apkArch" in \
        x86_64) rustArch='x86_64-unknown-linux-musl'; rustupSha256='8ab4f7759e22c308b49d737b5dc055c0d334f730632fdc6a169eda033983b846' ;; \
        aarch64) rustArch='aarch64-unknown-linux-musl'; rustupSha256='b3f15d01db21e4e9f192a81bfcbbb72e9055f6b01b4d0893b24f9f6c9f9d2b92' ;; \
        *) echo >&2 "unsupported architecture: $apkArch"; exit 1 ;; \
    esac; \
    url="https://static.rust-lang.org/rustup/archive/1.23.0/${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}; \
    rm rustup-init; \
    chmod -R a+w $RUSTUP_HOME $CARGO_HOME; \
    rustup --version; \
    cargo --version; \
    rustc --version;