Script to create CentOS 7 docker image

gistfile1.txt

#!/bin/bash -e

# Script to build a base CentOS 7 Pre-release docker image
# Tested under CentOS 6

BUILDROOT="/centos7"

if [ $(id -u) -ne 0 ]; then
  echo "Must be run as root"
  exit 1
fi

test -f /bin/tar || yum -y install tar
mkdir $BUILDROOT
rpm --root=$BUILDROOT --initdb
rpm --root=$BUILDROOT -ivh http://buildlogs.centos.org/centos/7/os/x86_64-20140617/Packages/centos-release-7-0.el7.0.140617.3.x86_64.rpm

# yum config not included in the release package yet
cp /etc/yum.conf ${BUILDROOT}/etc/yum.conf
mkdir -p ${BUILDROOT}/etc/yum.repos.d
cat <<HERE > ${BUILDROOT}/etc/yum.repos.d/centos7qa.repo
[base]
name=CentOS7QA
baseurl=http://buildlogs.centos.org/centos/7/os/x86_64-20140617/
gpgcheck=0
HERE

mkdir ${BUILDROOT}/dev
mknod -m 600 ${BUILDROOT}/dev/console c 5 1
mknod -m 600 ${BUILDROOT}/dev/initctl p
mknod -m 666 ${BUILDROOT}/dev/full c 1 7
mknod -m 666 ${BUILDROOT}/dev/null c 1 3
mknod -m 666 ${BUILDROOT}/dev/ptmx c 5 2
mknod -m 666 ${BUILDROOT}/dev/random c 1 8
mknod -m 666 ${BUILDROOT}/dev/tty c 5 0
mknod -m 666 ${BUILDROOT}/dev/tty0 c 4 0
mknod -m 666 ${BUILDROOT}/dev/urandom c 1 9
mknod -m 666 ${BUILDROOT}/dev/zero c 1 5

yum --installroot=$BUILDROOT --setopt=tsflags=nodocs \
    --setopt=group_package_types=mandatory -y groupinstall Core
yum --installroot=$BUILDROOT -y clean all

cat > ${BUILDROOT}/etc/sysconfig/network <<EOF
NETWORKING=yes
HOSTNAME=localhost.localdomain
EOF

rm -rf ${BUILDROOT}/usr/{{lib,share}/locale,{lib,lib64}/gconv,bin/localedef,sbin/build-locale-archive}
#  docs
rm -rf ${BUILDROOT}/usr/share/{man,doc,info,gnome/help}
#  cracklib
rm -rf ${BUILDROOT}/usr/share/cracklib
#  i18n
rm -rf ${BUILDROOT}/usr/share/i18n
#  sln
rm -rf ${BUILDROOT}/sbin/sln
#  ldconfig
rm -rf ${BUILDROOT}/etc/ld.so.cache
rm -rf ${BUILDROOT}/var/cache/ldconfig/*

tar --numeric-owner -f /vagrant/centos7qa.tar -C $BUILDROOT .