108 lines
2.6 KiB
Bash
Executable file
108 lines
2.6 KiB
Bash
Executable file
#!/usr/bin/env bash
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#
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# Create a base CentOS Docker image.
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#
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# This script is useful on systems with yum installed (e.g., building
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# a CentOS image on CentOS). See contrib/mkimage-rinse.sh for a way
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# to build CentOS images on other systems.
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usage() {
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cat <<EOOPTS
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$(basename $0) [OPTIONS] <name>
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OPTIONS:
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-y <yumconf> The path to the yum config to install packages from. The
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default is /etc/yum.conf.
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EOOPTS
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exit 1
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}
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# option defaults
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yum_config=/etc/yum.conf
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while getopts ":y:h" opt; do
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case $opt in
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y)
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yum_config=$OPTARG
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;;
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h)
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usage
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;;
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\?)
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echo "Invalid option: -$OPTARG"
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usage
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;;
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esac
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done
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shift $((OPTIND - 1))
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name=$1
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if [[ -z $name ]]; then
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usage
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fi
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#--------------------
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target=$(mktemp -d --tmpdir $(basename $0).XXXXXX)
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set -x
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mkdir -m 755 "$target"/dev
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mknod -m 600 "$target"/dev/console c 5 1
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mknod -m 600 "$target"/dev/initctl p
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mknod -m 666 "$target"/dev/full c 1 7
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mknod -m 666 "$target"/dev/null c 1 3
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mknod -m 666 "$target"/dev/ptmx c 5 2
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mknod -m 666 "$target"/dev/random c 1 8
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mknod -m 666 "$target"/dev/tty c 5 0
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mknod -m 666 "$target"/dev/tty0 c 4 0
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mknod -m 666 "$target"/dev/urandom c 1 9
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mknod -m 666 "$target"/dev/zero c 1 5
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# amazon linux yum will fail without vars set
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if [ -d /etc/yum/vars ]; then
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mkdir -p -m 755 "$target"/etc/yum
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cp -a /etc/yum/vars "$target"/etc/yum/
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fi
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yum -c "$yum_config" --installroot="$target" --releasever=/ --setopt=tsflags=nodocs \
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--setopt=group_package_types=mandatory -y groupinstall Core
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yum -c "$yum_config" --installroot="$target" -y clean all
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cat > "$target"/etc/sysconfig/network <<EOF
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NETWORKING=yes
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HOSTNAME=localhost.localdomain
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EOF
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# effectively: febootstrap-minimize --keep-zoneinfo --keep-rpmdb
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# --keep-services "$target". Stolen from mkimage-rinse.sh
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# locales
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rm -rf "$target"/usr/{{lib,share}/locale,{lib,lib64}/gconv,bin/localedef,sbin/build-locale-archive}
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# docs
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rm -rf "$target"/usr/share/{man,doc,info,gnome/help}
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# cracklib
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rm -rf "$target"/usr/share/cracklib
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# i18n
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rm -rf "$target"/usr/share/i18n
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# sln
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rm -rf "$target"/sbin/sln
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# ldconfig
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rm -rf "$target"/etc/ld.so.cache
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rm -rf "$target"/var/cache/ldconfig/*
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version=
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for file in "$target"/etc/{redhat,system}-release
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do
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if [ -r "$file" ]; then
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version="$(sed 's/^[^0-9\]*\([0-9.]\+\).*$/\1/' "$file")"
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break
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fi
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done
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if [ -z "$version" ]; then
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echo >&2 "warning: cannot autodetect OS version, using '$name' as tag"
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version=$name
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fi
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tar --numeric-owner -c -C "$target" . | docker import - $name:$version
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docker run -i -t $name:$version echo success
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rm -rf "$target"
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