FROM scratch as base
ARG ARCH=x86_64
ENV VERSION=1.35
ENV SRC_HASH=4d62ff37342ec7aed748535323930c7cf94acf71c3591882b26a7ea50f3edc16
ENV SRC_FILE=tar-${VERSION}.tar.xz
ENV SRC_SITE=https://ftp.gnu.org/gnu/tar/${SRC_FILE}

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

FROM fetch as build
COPY --from=busybox . /
COPY --from=binutils . /
COPY --from=musl . /
COPY --from=make . /
COPY --from=gcc . /
RUN tar -xf tar-${VERSION}.tar.xz
WORKDIR tar-${VERSION}
ENV FORCE_UNSAFE_CONFIGURE=1
RUN --network=none <<-EOF
	set -ex
	./configure \
		--build=${ARCH}-linux-musl \
		--host=${ARCH}-linux-musl \
		--target=${ARCH}-linux-musl \
		--prefix=/usr \
		--mandir=/usr/share/man \
        --localstatedir=/var \
        --sysconfdir=/etc
	make -j "$(nproc)"
EOF

FROM build as install
RUN --network=none make DESTDIR="/rootfs" install
RUN find /rootfs -exec touch -hcd "@0" "{}" +

FROM scratch as package
COPY --from=install /rootfs /