FROM frebib/debian-builder as builder ARG ARCH=x86_64 ARG ARCH_ALT=i686 ARG GLIBC_VER=2.26 ARG BUSYB_VER=1.27.2 ARG SU_EXEC_VER=v0.2 ARG TINI_VER=v0.16.1 ARG PREFIX=/output WORKDIR $PREFIX #Set up our dependencies, configure the output filesystem a bit RUN mkdir -p dev etc home proc root tmp usr/{bin,lib,lib32} var && \ # Set up directories in a very confusing but very worky way ln -sv usr/lib lib64 && \ ln -sv usr/lib lib && \ ln -sv usr/bin bin && \ ln -sv usr/bin sbin && \ ln -sv bin usr/sbin # Pull tini and su-exec utilities RUN curl -fL https://github.com/javabean/su-exec/releases/download/${SU_EXEC_VER}/su-exec.amd64 > sbin/su-exec && \ curl -fL https://github.com/krallin/tini/releases/download/${TINI_VER}/tini-amd64 > sbin/tini && \ chmod +x sbin/su-exec sbin/tini WORKDIR /tmp/glibc/build # Download and build glibc from source RUN curl -fL https://ftp.gnu.org/gnu/glibc/glibc-${GLIBC_VER}.tar.xz \ | tar xJ --strip-components=1 -C .. && \ \ echo "slibdir=/usr/lib" >> configparms && \ echo "rtlddir=/usr/lib" >> configparms && \ echo "sbindir=/bin" >> configparms && \ echo "rootsbindir=/sbin" >> configparms && \ echo "build-programs=yes" >> configparms && \ \ ../configure \ --prefix=/usr \ --libdir=/usr/lib \ --libexecdir=/usr/lib \ --enable-add-ons \ --enable-obsolete-rpc \ --enable-kernel=3.10.0 \ --enable-bind-now \ --disable-profile \ --enable-stackguard-randomization \ --enable-stack-protector=strong \ --enable-lock-elision \ --enable-multi-arch \ --disable-werror && \ make -j "$(nproc)" && \ make -j "$(nproc)" install_root="$(pwd)/out" install RUN strip -s out/sbin/ldconfig && \ # Patch ldd to use sh not bash sed -i '1s/.*/#!\/bin\/sh/' out/usr/bin/ldd && \ sed -i 's/lib64/lib/g' out/usr/bin/ldd && \ # Copy glibc libs & loader cp -d out/usr/lib/*.so* "${PREFIX}/usr/lib" && \ cp -d out/usr/bin/ldd "${PREFIX}/bin" && \ cp -d out/sbin/ldconfig "${PREFIX}/sbin" && \ \ echo /usr/lib32 > "${PREFIX}/etc/ld.so.conf" WORKDIR /tmp/busybox # Download and build busybox from source RUN curl -fL https://busybox.net/downloads/busybox-${BUSYB_VER}.tar.bz2 \ | tar xj --strip-components=1 && \ # Use default configuration make defconfig && \ make -j "$(nproc)" && \ cp busybox "${PREFIX}/bin" && \ # "Install" busybox, creating symlinks to all binaries it provides ./busybox --list-full | xargs -i ln -s /bin/busybox "${PREFIX}/{}" WORKDIR $PREFIX # Generate initial ld.so.cache so ELF binaries work. # This is important otherwise everything will error with # 'no such file or directory' when looking for libraries RUN ${PREFIX}/sbin/ldconfig -r ${PREFIX} && \ # Copy UTC localtime to output cp /usr/share/zoneinfo/Etc/UTC etc/ # ============= FROM scratch WORKDIR / COPY --from=builder /output/ / # Add default skeleton configuration files ADD skel/* /etc/ RUN chmod 1777 /tmp ENV ENV="/etc/profile" ENV PATH=/usr/local/sbin:/usr/local/bin:/usr/bin CMD ["/bin/sh"]