#!/usr/bin/env bash

 #
 # Create a base CentOS Docker image.
 
 # This script is useful on systems with rinse available (e.g.,
 # building a CentOS image on Debian).  See contrib/mkimage-yum.sh for
 # a way to build CentOS images on systems with yum installed.
 

 set -e
 

 echo >&2
 echo >&2 'warning: this script is deprecated - see mkimage.sh and mkimage/rinse'
 echo >&2
 

 repo="$1"
 distro="$2"
 mirror="$3"
 
 if [ ! "$repo" ] || [ ! "$distro" ]; then
 	self="$(basename $0)"
 	echo >&2 "usage: $self repo distro [mirror]"
 	echo >&2
 	echo >&2 "   ie: $self username/centos centos-5"
 	echo >&2 "       $self username/centos centos-6"
 	echo >&2
 	echo >&2 "   ie: $self username/slc slc-5"
 	echo >&2 "       $self username/slc slc-6"
 	echo >&2
 	echo >&2 "   ie: $self username/centos centos-5 http://vault.centos.org/5.8/os/x86_64/CentOS/"
 	echo >&2 "       $self username/centos centos-6 http://vault.centos.org/6.3/os/x86_64/Packages/"
 	echo >&2
 	echo >&2 'See /etc/rinse for supported values of "distro" and for examples of'
 	echo >&2 '  expected values of "mirror".'
 	echo >&2
 	echo >&2 'This script is tested to work with the original upstream version of rinse,'
 	echo >&2 '  found at http://www.steve.org.uk/Software/rinse/ and also in Debian at'
 	echo >&2 '  http://packages.debian.org/wheezy/rinse -- as always, YMMV.'
 	echo >&2
 	exit 1
 fi
 

 target="${TMPDIR:-/var/tmp}/docker-rootfs-rinse-$distro-$$-$RANDOM"

 
 cd "$(dirname "$(readlink -f "$BASH_SOURCE")")"
 returnTo="$(pwd -P)"
 
 rinseArgs=( --arch amd64 --distribution "$distro" --directory "$target" )
 if [ "$mirror" ]; then
 	rinseArgs+=( --mirror "$mirror" )
 fi
 
 set -x
 
 mkdir -p "$target"
 
 sudo rinse "${rinseArgs[@]}"
 
 cd "$target"
 
 # rinse fails a little at setting up /dev, so we'll just wipe it out and create our own
 sudo rm -rf dev
 sudo mkdir -m 755 dev
 (
 	cd dev
 	sudo ln -sf /proc/self/fd ./
 	sudo mkdir -m 755 pts
 	sudo mkdir -m 1777 shm
 	sudo mknod -m 600 console c 5 1
 	sudo mknod -m 600 initctl p
 	sudo mknod -m 666 full c 1 7
 	sudo mknod -m 666 null c 1 3
 	sudo mknod -m 666 ptmx c 5 2
 	sudo mknod -m 666 random c 1 8
 	sudo mknod -m 666 tty c 5 0
 	sudo mknod -m 666 tty0 c 4 0
 	sudo mknod -m 666 urandom c 1 9
 	sudo mknod -m 666 zero c 1 5
 )
 
 # effectively: febootstrap-minimize --keep-zoneinfo --keep-rpmdb --keep-services "$target"
 #  locales
 sudo rm -rf usr/{{lib,share}/locale,{lib,lib64}/gconv,bin/localedef,sbin/build-locale-archive}

 #  docs and man pages

 sudo rm -rf usr/share/{man,doc,info,gnome/help}
 #  cracklib
 sudo rm -rf usr/share/cracklib
 #  i18n
 sudo rm -rf usr/share/i18n
 #  yum cache
 sudo rm -rf var/cache/yum
 sudo mkdir -p --mode=0755 var/cache/yum
 #  sln
 sudo rm -rf sbin/sln
 #  ldconfig
 #sudo rm -rf sbin/ldconfig
 sudo rm -rf etc/ld.so.cache var/cache/ldconfig
 sudo mkdir -p --mode=0755 var/cache/ldconfig
 
 # allow networking init scripts inside the container to work without extra steps
 echo 'NETWORKING=yes' | sudo tee etc/sysconfig/network > /dev/null
 
 # to restore locales later:
 #  yum reinstall glibc-common
 
 version=
 if [ -r etc/redhat-release ]; then
 	version="$(sed -E 's/^[^0-9.]*([0-9.]+).*$/\1/' etc/redhat-release)"
 elif [ -r etc/SuSE-release ]; then
 	version="$(awk '/^VERSION/ { print $3 }' etc/SuSE-release)"
 fi
 
 if [ -z "$version" ]; then
 	echo >&2 "warning: cannot autodetect OS version, using $distro as tag"
 	sleep 20
 	version="$distro"
 fi
 
 sudo tar --numeric-owner -c . | docker import - $repo:$version
 
 docker run -i -t $repo:$version echo success
 
 cd "$returnTo"
 sudo rm -rf "$target"