FROM scratch as base
ENV VERSION=30
ENV SRC_HASH=f0e8bb1f9b7eb0b01285495a2699df3a4b766784c1765a8f1aeedf63c0806369
ENV SRC_FILE=zip${VERSION}.tar.gz
ENV SRC_SITE=https://fossies.org/linux/misc/${SRC_FILE}

FROM base as fetch
ADD --checksum=sha256:${SRC_HASH} ${SRC_SITE} .

FROM fetch as build
COPY --from=stagex/binutils . /
COPY --from=stagex/busybox . /
COPY --from=stagex/gcc . /
COPY --from=stagex/cmake . /
COPY --from=stagex/musl . /
COPY --from=stagex/make . /
RUN --network=none tar -xf ${SRC_FILE}
WORKDIR zip${VERSION}
ENV SOURCE_DATE_EPOCH=1
RUN --network=none <<-EOF
    set -eux
    make -f unix/Makefile prefix=/usr generic
EOF

FROM build as install
RUN --network=none <<-EOF
    set -eux
    mkdir -p /rootfs/usr/bin/
    DESTDIR=/rootfs make -f unix/Makefile prefix=/rootfs/usr MANDIR=rootfs/usr/share/man/man1 install
EOF
RUN --network=none find /rootfs -exec touch -hcd "@0" "{}" +

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