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创建自己docker image镜像SH脚本

docker 开心洋葱 2611次浏览 已收录 0个评论 手机上查看
#!/usr/bin/env bash
#
# Create a base CentOS Docker image.
#
# This script is useful on systems with yum installed (e.g., building
# a CentOS image on CentOS).  See contrib/mkimage-rinse.sh for a way
# to build CentOS images on other systems.

set -e

usage() {
    cat <<EOOPTS
$(basename $0) [OPTIONS] <name>
OPTIONS:
  -p "<packages>"  The list of packages to install in the container.
                   The default is blank.
  -g "<groups>"    The groups of packages to install in the container.
                   The default is "Core".
  -y <yumconf>     The path to the yum config to install packages from. The
                   default is /etc/yum.conf for Centos/RHEL and /etc/dnf/dnf.conf for Fedora
EOOPTS
    exit 1
}

# option defaults
yum_config=/etc/yum.conf
if [ -f /etc/dnf/dnf.conf ] && command -v dnf &> /dev/null; then
    yum_config=/etc/dnf/dnf.conf
    alias yum=dnf
fi
install_groups="Core"
while getopts ":y:p:g:h" opt; do
    case $opt in
        y)
            yum_config=$OPTARG
            ;;
        h)
            usage
            ;;
        p)
            install_packages="$OPTARG"
            ;;
        g)
            install_groups="$OPTARG"
            ;;
        \?)
            echo "Invalid option: -$OPTARG"
            usage
            ;;
    esac
done
shift $((OPTIND - 1))
name=$1

if [[ -z $name ]]; then
    usage
fi

target=$(mktemp -d --tmpdir $(basename $0).XXXXXX)

set -x

mkdir -m 755 "$target"/dev
mknod -m 600 "$target"/dev/console c 5 1
mknod -m 600 "$target"/dev/initctl p
mknod -m 666 "$target"/dev/full c 1 7
mknod -m 666 "$target"/dev/null c 1 3
mknod -m 666 "$target"/dev/ptmx c 5 2
mknod -m 666 "$target"/dev/random c 1 8
mknod -m 666 "$target"/dev/tty c 5 0
mknod -m 666 "$target"/dev/tty0 c 4 0
mknod -m 666 "$target"/dev/urandom c 1 9
mknod -m 666 "$target"/dev/zero c 1 5

# amazon linux yum will fail without vars set
if [ -d /etc/yum/vars ]; then
    mkdir -p -m 755 "$target"/etc/yum
    cp -a /etc/yum/vars "$target"/etc/yum/
fi

if [[ -n "$install_groups" ]];
then
    yum -c "$yum_config" --installroot="$target" --releasever=/ --setopt=tsflags=nodocs \
        --setopt=group_package_types=mandatory -y groupinstall $install_groups
fi

if [[ -n "$install_packages" ]];
then
    yum -c "$yum_config" --installroot="$target" --releasever=/ --setopt=tsflags=nodocs \
        --setopt=group_package_types=mandatory -y install $install_packages
fi

yum -c "$yum_config" --installroot="$target" -y clean all

cat > "$target"/etc/sysconfig/network <<EOF
NETWORKING=yes
HOSTNAME=localhost.localdomain
EOF

# effectively: febootstrap-minimize --keep-zoneinfo --keep-rpmdb --keep-services "$target".
#  locales
rm -rf "$target"/usr/{{lib,share}/locale,{lib,lib64}/gconv,bin/localedef,sbin/build-locale-archive}
#  docs and man pages
rm -rf "$target"/usr/share/{man,doc,info,gnome/help}
#  cracklib
rm -rf "$target"/usr/share/cracklib
#  i18n
rm -rf "$target"/usr/share/i18n
#  yum cache
rm -rf "$target"/var/cache/yum
mkdir -p --mode=0755 "$target"/var/cache/yum
#  sln
rm -rf "$target"/sbin/sln
#  ldconfig
rm -rf "$target"/etc/ld.so.cache "$target"/var/cache/ldconfig
mkdir -p --mode=0755 "$target"/var/cache/ldconfig

version=
for file in "$target"/etc/{redhat,system}-release
do
    if [ -r "$file" ]; then
        version="$(sed 's/^[^0-9\]*\([0-9.]\+\).*$/\1/' "$file")"
        break
    fi
done

if [ -z "$version" ]; then
    echo >&2 "warning: cannot autodetect OS version, using '$name' as tag"
    version=$name
fi

tar --numeric-owner -c -C "$target" . | docker import - $name:$version

docker run -i -t --rm $name:$version /bin/bash -c 'echo success'

rm -rf "$target"

把上面代码保存为本地create_dockerimages.sh,并执行

rpm -Uvh http://dl.Fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
yum -y install docker-io 
./create_dockerimages.sh -y /etc/yum.conf centos6

附远程脚本下载地址:https://raw.githubusercontent.com/docker/docker/master/contrib/mkimage-yum.sh


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