FROM scratch AS base
ENV VERSION=0.4.40
ENV SRC_HASH=550da7ff02ef62c60db6e813b6dbae65b9ed3d491186ea74929536feaceea94b
ENV SRC_FILE=mdBook-${VERSION}.tar.gz
ENV SRC_SITE=https://codeload.github.com/rust-lang/mdBook/tar.gz/refs/tags/v${VERSION}

FROM base AS fetch
ADD --checksum=sha256:${SRC_HASH} ${SRC_SITE} ${SRC_FILE}
COPY --from=stagex/rust . /
COPY --from=stagex/busybox . /
COPY --from=stagex/musl . /
COPY --from=stagex/gcc . /
COPY --from=stagex/llvm16 . /
COPY --from=stagex/libunwind . /
COPY --from=stagex/openssl . /
COPY --from=stagex/zlib . /
COPY --from=stagex/ca-certificates . /
RUN tar xf ${SRC_FILE}
WORKDIR mdBook-${VERSION}
RUN cargo fetch

FROM fetch AS build
COPY --from=stagex/binutils . /
ENV RUST_BACKTRACE=1
ENV RUSTFLAGS='-C codegen-units=1 -C target-feature=+crt-static'
RUN --network=none \
    cargo build \
        --frozen \
        --release \
        --target x86_64-unknown-linux-musl \
        --bin mdbook

FROM build AS install
RUN <<-EOF
    set -eux
    mkdir -p /rootfs/usr/bin
    cp target/x86_64-unknown-linux-musl/release/mdbook /rootfs/usr/bin/mdbook
EOF

FROM stagex/filesystem AS package
COPY --from=install /rootfs/. /