add script to make base image for PLD Linux

https://www.pld-linux.org/packages/docker

Signed-off-by: Elan Ruusamäe <glen@pld-linux.org>

contrib/mkimage-pld.sh

@@ -0,0 +1,73 @@
+#!/bin/sh
+#
+# Generate a minimal filesystem for PLD Linux and load it into the local docker as "pld".
+# https://www.pld-linux.org/packages/docker
+#
+set -e
+
+if [ "$(id -u)" != "0" ]; then
+	echo >&2 "$0: requires root"
+	exit 1
+fi
+
+image_name=pld
+
+tmpdir=$(mktemp -d ${TMPDIR:-/var/tmp}/pld-docker-XXXXXX)
+root=$tmpdir/rootfs
+install -d -m 755 $root
+
+# to clean up:
+docker rmi $image_name || :
+
+# build
+rpm -r $root --initdb
+
+set +e
+install -d $root/dev/pts
+mknod $root/dev/random c 1 8 -m 644
+mknod $root/dev/urandom c 1 9 -m 644
+mknod $root/dev/full c 1 7 -m 666
+mknod $root/dev/null c 1 3 -m 666
+mknod $root/dev/zero c 1 5 -m 666
+mknod $root/dev/console c 5 1 -m 660
+set -e
+
+poldek -r $root --up --noask -u \
+	--noignore \
+	-O 'rpmdef=_install_langs C' \
+	-O 'rpmdef=_excludedocs 1' \
+	vserver-packages \
+	bash iproute2 coreutils grep poldek
+
+# fix netsharedpath, so containers would be able to install when some paths are mounted
+sed -i -e 's;^#%_netsharedpath.*;%_netsharedpath /dev/shm:/sys:/proc:/dev:/etc/hostname;' $root/etc/rpm/macros
+
+# no need for alternatives
+poldek-config -c $root/etc/poldek/poldek.conf ignore systemd-init
+
+# this makes initscripts to believe network is up
+touch $root/var/lock/subsys/network
+
+# cleanup large optional packages
+remove_packages="ca-certificates"
+for pkg in $remove_packages; do
+	rpm -r $root -q $pkg && rpm -r $root -e $pkg --nodeps
+done
+
+# cleanup more
+rm -v $root/etc/ld.so.cache
+rm -rfv $root/var/cache/hrmib/*
+rm -rfv $root/usr/share/man/man?/*
+rm -rfv $root/usr/share/locale/*/
+rm -rfv $root/usr/share/help/*/
+rm -rfv $root/usr/share/doc/*
+rm -rfv $root/usr/src/examples/*
+rm -rfv $root/usr/share/pixmaps/*
+
+# and import
+tar --numeric-owner --xattrs --acls -C $root -c . | docker import - $image_name
+
+# and test
+docker run -i -u root $image_name /bin/echo Success.
+
+rm -r $tmpdir