Dockerfile_coreutils

FROM middagj/kaniko-base

ARG gnu_mirror=https://ftp.snt.utwente.nl/pub/software/gnu
ARG coreutils_version=9.5
ARG coreutils_checksum=cd328edeac92f6a665de9f323c93b712af1858bc2e0d88f3f7100469470a1b8a

# Download
RUN curl -fsSL -o /tmp/coreutils.tar.xz "${gnu_mirror}/coreutils/coreutils-${coreutils_version}.tar.xz" \
 && sha256sum -c <<< "${coreutils_checksum}  /tmp/coreutils.tar.xz" \
 && tar -xJf /tmp/coreutils.tar.xz \
 && mv coreutils-* coreutils \
 && rm -f /tmp/coreutils*

# Compile
RUN cd coreutils \
 && FORCE_UNSAFE_CONFIGURE=1 CC='musl-gcc' \
    CFLAGS='-Os -ffunction-sections -fdata-sections' \
    LDFLAGS='-Wl,--gc-sections' \
    ./configure --prefix=/busybox \
 && make

# Install
RUN cd coreutils && make install

# Clean /busybox
RUN while IFS= read -r file; do \
      strip -s -R .comment -R .gnu.version --strip-unneeded "$file" ; \
    done < <(find -- /busybox/bin -type f | sort) \
 && rm -rf /busybox/{libexec,share}