FROM scratch as base
ENV VERSION=5.2.21
ENV SRC_HASH=c8e31bdc59b69aaffc5b36509905ba3e5cbb12747091d27b4b977f078560d5b8
ENV SRC_FILE=bash-${VERSION}.tar.gz
ENV SRC_SITE=https://ftp.gnu.org/gnu/bash/${SRC_FILE}

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

FROM fetch as build
COPY --from=stagex/busybox . /
COPY --from=stagex/musl . /
COPY --from=stagex/gcc . /
COPY --from=stagex/binutils . /
COPY --from=stagex/make . /
RUN tar -xzf ${SRC_FILE}
WORKDIR bash-${VERSION}
RUN --network=none <<-EOF
	set -eux
	./configure \
		--build=x86_64-unknown-linux-musl \
		--host=x86_64-unknown-linux-musl \
		--prefix=/usr \
		--bindir=/usr/bin \
		--mandir=/usr/share/man \
		--infodir=/usr/share/info \
		--disable-nls \
		--enable-readline \
		--without-curses \
		--without-bash-malloc
	make
EOF

FROM build as install
RUN make DESTDIR=/rootfs install
RUN find /rootfs -exec touch -hcd "@0" "{}" +

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