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Merge pull request #41440 from tianon/rm-mkimage.sh

Remove "mkimage.sh" and associated scripts
This commit is contained in:
Brian Goff 2020-10-20 12:19:47 -07:00 committed by GitHub
commit 73dc6a680c
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6 changed files with 0 additions and 563 deletions

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@ -1,152 +0,0 @@
#!/usr/bin/env bash
set -e
mkimg="$(basename "$0")"
usage() {
echo >&2 "usage: $mkimg [-d dir] [-t tag] [--compression algo| --no-compression] script [script-args]"
echo >&2 " ie: $mkimg -t someuser/debian debootstrap --variant=minbase buster"
echo >&2 " $mkimg -t someuser/ubuntu debootstrap --include=ubuntu-minimal --components=main,universe trusty"
echo >&2 " $mkimg -t someuser/busybox busybox-static"
echo >&2 " $mkimg -t someuser/centos:5 rinse --distribution centos-5"
echo >&2 " $mkimg -t someuser/mageia:4 mageia-urpmi --version=4"
echo >&2 " $mkimg -t someuser/mageia:4 mageia-urpmi --version=4 --mirror=http://somemirror/"
exit 1
}
scriptDir="$(dirname "$(readlink -f "$BASH_SOURCE")")/mkimage"
os=
os=$(uname -o)
optTemp=$(getopt --options '+d:t:c:hC' --longoptions 'dir:,tag:,compression:,no-compression,help' --name "$mkimg" -- "$@")
eval set -- "$optTemp"
unset optTemp
dir=
tag=
compression="auto"
while true; do
case "$1" in
-d | --dir)
dir="$2"
shift 2
;;
-t | --tag)
tag="$2"
shift 2
;;
--compression)
compression="$2"
shift 2
;;
--no-compression)
compression="none"
shift 1
;;
-h | --help) usage ;;
--)
shift
break
;;
esac
done
script="$1"
[ "$script" ] || usage
shift
if [ "$compression" == 'auto' ] || [ -z "$compression" ]; then
compression='xz'
fi
[ "$compression" == 'none' ] && compression=''
if [ ! -x "$scriptDir/$script" ]; then
echo >&2 "error: $script does not exist or is not executable"
echo >&2 " see $scriptDir for possible scripts"
exit 1
fi
# don't mistake common scripts like .febootstrap-minimize as image-creators
if [[ "$script" == .* ]]; then
echo >&2 "error: $script is a script helper, not a script"
echo >&2 " see $scriptDir for possible scripts"
exit 1
fi
delDir=
if [ -z "$dir" ]; then
dir="$(mktemp -d ${TMPDIR:-/var/tmp}/docker-mkimage.XXXXXXXXXX)"
delDir=1
fi
rootfsDir="$dir/rootfs"
(
set -x
mkdir -p "$rootfsDir"
)
# pass all remaining arguments to $script
"$scriptDir/$script" "$rootfsDir" "$@"
# Docker mounts tmpfs at /dev and procfs at /proc so we can remove them
rm -rf "$rootfsDir/dev" "$rootfsDir/proc"
mkdir -p "$rootfsDir/dev" "$rootfsDir/proc"
# make sure /etc/resolv.conf has something useful in it
mkdir -p "$rootfsDir/etc"
cat > "$rootfsDir/etc/resolv.conf" << 'EOF'
nameserver 8.8.8.8
nameserver 8.8.4.4
EOF
tarFile="$dir/rootfs.tar${compression:+.$compression}"
touch "$tarFile"
(
set -x
tar --numeric-owner --create --auto-compress --file "$tarFile" --directory "$rootfsDir" --transform='s,^./,,' .
)
echo >&2 "+ cat > '$dir/Dockerfile'"
cat > "$dir/Dockerfile" << EOF
FROM scratch
ADD $(basename "$tarFile") /
EOF
# if our generated image has a decent shell, let's set a default command
for shell in /bin/bash /usr/bin/fish /usr/bin/zsh /bin/sh; do
if [ -x "$rootfsDir/$shell" ]; then
(
set -x
echo 'CMD ["'"$shell"'"]' >> "$dir/Dockerfile"
)
break
fi
done
(
set -x
rm -rf "$rootfsDir"
)
if [ "$tag" ]; then
(
set -x
docker build -t "$tag" "$dir"
)
elif [ "$delDir" ]; then
# if we didn't specify a tag and we're going to delete our dir, let's just build an untagged image so that we did _something_
(
set -x
docker build "$dir"
)
fi
if [ "$delDir" ]; then
(
set -x
rm -rf "$dir"
)
fi

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@ -1,28 +0,0 @@
#!/usr/bin/env bash
set -e
rootfsDir="$1"
shift
(
cd "$rootfsDir"
# effectively: febootstrap-minimize --keep-zoneinfo --keep-rpmdb --keep-services "$target"
# locales
rm -rf usr/{{lib,share}/locale,{lib,lib64}/gconv,bin/localedef,sbin/build-locale-archive}
# docs and man pages
rm -rf usr/share/{man,doc,info,gnome/help}
# cracklib
rm -rf usr/share/cracklib
# i18n
rm -rf usr/share/i18n
# yum cache
rm -rf var/cache/yum
mkdir -p --mode=0755 var/cache/yum
# sln
rm -rf sbin/sln
# ldconfig
#rm -rf sbin/ldconfig
rm -rf etc/ld.so.cache var/cache/ldconfig
mkdir -p --mode=0755 var/cache/ldconfig
)

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@ -1,34 +0,0 @@
#!/usr/bin/env bash
set -e
rootfsDir="$1"
shift
busybox="$(which busybox 2> /dev/null || true)"
if [ -z "$busybox" ]; then
echo >&2 'error: busybox: not found'
echo >&2 ' install it with your distribution "busybox-static" package'
exit 1
fi
if ! ldd "$busybox" 2>&1 | grep -q 'not a dynamic executable'; then
echo >&2 "error: '$busybox' appears to be a dynamic executable"
echo >&2 ' you should install your distribution "busybox-static" package instead'
exit 1
fi
mkdir -p "$rootfsDir/bin"
rm -f "$rootfsDir/bin/busybox" # just in case
cp "$busybox" "$rootfsDir/bin/busybox"
(
cd "$rootfsDir"
IFS=$'\n'
modules=($(bin/busybox --list-modules))
unset IFS
for module in "${modules[@]}"; do
mkdir -p "$(dirname "$module")"
ln -sf /bin/busybox "$module"
done
)

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@ -1,254 +0,0 @@
#!/usr/bin/env bash
set -e
mkimgdeb="$(basename "$0")"
mkimg="$(dirname "$0").sh"
usage() {
echo >&2 "usage: $mkimgdeb rootfsDir suite [debootstrap-args]"
echo >&2 " note: $mkimgdeb meant to be used from $mkimg"
exit 1
}
rootfsDir="$1"
if [ -z "$rootfsDir" ]; then
echo >&2 "error: rootfsDir is missing"
echo >&2
usage
fi
shift
# we have to do a little fancy footwork to make sure "rootfsDir" becomes the second non-option argument to debootstrap
before=()
while [ $# -gt 0 ] && [[ "$1" == -* ]]; do
before+=("$1")
shift
done
suite="$1"
if [ -z "$suite" ]; then
echo >&2 "error: suite is missing"
echo >&2
usage
fi
shift
# get path to "chroot" in our current PATH
chrootPath="$(type -P chroot || :)"
if [ -z "$chrootPath" ]; then
echo >&2 "error: chroot not found. Are you root?"
echo >&2
usage
fi
rootfs_chroot() {
# "chroot" doesn't set PATH, so we need to set it explicitly to something our new debootstrap chroot can use appropriately!
# set PATH and chroot away!
PATH='/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin' \
"$chrootPath" "$rootfsDir" "$@"
}
# allow for DEBOOTSTRAP=qemu-debootstrap ./mkimage.sh ...
: ${DEBOOTSTRAP:=debootstrap}
(
set -x
$DEBOOTSTRAP "${before[@]}" "$suite" "$rootfsDir" "$@"
)
# now for some Docker-specific tweaks
# prevent init scripts from running during install/update
echo >&2 "+ echo exit 101 > '$rootfsDir/usr/sbin/policy-rc.d'"
cat > "$rootfsDir/usr/sbin/policy-rc.d" <<- 'EOF'
#!/bin/sh
# For most Docker users, "apt-get install" only happens during "docker build",
# where starting services doesn't work and often fails in humorous ways. This
# prevents those failures by stopping the services from attempting to start.
exit 101
EOF
chmod +x "$rootfsDir/usr/sbin/policy-rc.d"
# prevent upstart scripts from running during install/update
(
set -x
rootfs_chroot dpkg-divert --local --rename --add /sbin/initctl
cp -a "$rootfsDir/usr/sbin/policy-rc.d" "$rootfsDir/sbin/initctl"
sed -i 's/^exit.*/exit 0/' "$rootfsDir/sbin/initctl"
)
# shrink a little, since apt makes us cache-fat (wheezy: ~157.5MB vs ~120MB)
(
set -x
rootfs_chroot apt-get clean
)
# this file is one APT creates to make sure we don't "autoremove" our currently
# in-use kernel, which doesn't really apply to debootstraps/Docker images that
# don't even have kernels installed
rm -f "$rootfsDir/etc/apt/apt.conf.d/01autoremove-kernels"
# Ubuntu 10.04 sucks... :)
if strings "$rootfsDir/usr/bin/dpkg" | grep -q unsafe-io; then
# force dpkg not to call sync() after package extraction (speeding up installs)
echo >&2 "+ echo force-unsafe-io > '$rootfsDir/etc/dpkg/dpkg.cfg.d/docker-apt-speedup'"
cat > "$rootfsDir/etc/dpkg/dpkg.cfg.d/docker-apt-speedup" <<- 'EOF'
# For most Docker users, package installs happen during "docker build", which
# doesn't survive power loss and gets restarted clean afterwards anyhow, so
# this minor tweak gives us a nice speedup (much nicer on spinning disks,
# obviously).
force-unsafe-io
EOF
fi
if [ -d "$rootfsDir/etc/apt/apt.conf.d" ]; then
# _keep_ us lean by effectively running "apt-get clean" after every install
aptGetClean='"rm -f /var/cache/apt/archives/*.deb /var/cache/apt/archives/partial/*.deb /var/cache/apt/*.bin || true";'
echo >&2 "+ cat > '$rootfsDir/etc/apt/apt.conf.d/docker-clean'"
cat > "$rootfsDir/etc/apt/apt.conf.d/docker-clean" <<- EOF
# Since for most Docker users, package installs happen in "docker build" steps,
# they essentially become individual layers due to the way Docker handles
# layering, especially using CoW filesystems. What this means for us is that
# the caches that APT keeps end up just wasting space in those layers, making
# our layers unnecessarily large (especially since we'll normally never use
# these caches again and will instead just "docker build" again and make a brand
# new image).
# Ideally, these would just be invoking "apt-get clean", but in our testing,
# that ended up being cyclic and we got stuck on APT's lock, so we get this fun
# creation that's essentially just "apt-get clean".
DPkg::Post-Invoke { ${aptGetClean} };
APT::Update::Post-Invoke { ${aptGetClean} };
Dir::Cache::pkgcache "";
Dir::Cache::srcpkgcache "";
# Note that we do realize this isn't the ideal way to do this, and are always
# open to better suggestions (https://github.com/docker/docker/issues).
EOF
# remove apt-cache translations for fast "apt-get update"
echo >&2 "+ echo Acquire::Languages 'none' > '$rootfsDir/etc/apt/apt.conf.d/docker-no-languages'"
cat > "$rootfsDir/etc/apt/apt.conf.d/docker-no-languages" <<- 'EOF'
# In Docker, we don't often need the "Translations" files, so we're just wasting
# time and space by downloading them, and this inhibits that. For users that do
# need them, it's a simple matter to delete this file and "apt-get update". :)
Acquire::Languages "none";
EOF
echo >&2 "+ echo Acquire::GzipIndexes 'true' > '$rootfsDir/etc/apt/apt.conf.d/docker-gzip-indexes'"
cat > "$rootfsDir/etc/apt/apt.conf.d/docker-gzip-indexes" <<- 'EOF'
# Since Docker users using "RUN apt-get update && apt-get install -y ..." in
# their Dockerfiles don't go delete the lists files afterwards, we want them to
# be as small as possible on-disk, so we explicitly request "gz" versions and
# tell Apt to keep them gzipped on-disk.
# For comparison, an "apt-get update" layer without this on a pristine
# "debian:wheezy" base image was "29.88 MB", where with this it was only
# "8.273 MB".
Acquire::GzipIndexes "true";
Acquire::CompressionTypes::Order:: "gz";
EOF
# update "autoremove" configuration to be aggressive about removing suggests deps that weren't manually installed
echo >&2 "+ echo Apt::AutoRemove::SuggestsImportant 'false' > '$rootfsDir/etc/apt/apt.conf.d/docker-autoremove-suggests'"
cat > "$rootfsDir/etc/apt/apt.conf.d/docker-autoremove-suggests" <<- 'EOF'
# Since Docker users are looking for the smallest possible final images, the
# following emerges as a very common pattern:
# RUN apt-get update \
# && apt-get install -y <packages> \
# && <do some compilation work> \
# && apt-get purge -y --auto-remove <packages>
# By default, APT will actually _keep_ packages installed via Recommends or
# Depends if another package Suggests them, even and including if the package
# that originally caused them to be installed is removed. Setting this to
# "false" ensures that APT is appropriately aggressive about removing the
# packages it added.
# https://aptitude.alioth.debian.org/doc/en/ch02s05s05.html#configApt-AutoRemove-SuggestsImportant
Apt::AutoRemove::SuggestsImportant "false";
EOF
fi
if [ -z "$DONT_TOUCH_SOURCES_LIST" ]; then
# tweak sources.list, where appropriate
lsbDist=
if [ -z "$lsbDist" -a -r "$rootfsDir/etc/os-release" ]; then
lsbDist="$(. "$rootfsDir/etc/os-release" && echo "$ID")"
fi
if [ -z "$lsbDist" -a -r "$rootfsDir/etc/lsb-release" ]; then
lsbDist="$(. "$rootfsDir/etc/lsb-release" && echo "$DISTRIB_ID")"
fi
if [ -z "$lsbDist" -a -r "$rootfsDir/etc/debian_version" ]; then
lsbDist='Debian'
fi
# normalize to lowercase for easier matching
lsbDist="$(echo "$lsbDist" | tr '[:upper:]' '[:lower:]')"
case "$lsbDist" in
debian)
# updates and security!
if curl -o /dev/null -s --head --location --fail "http://security.debian.org/dists/$suite/updates/main/binary-$(rootfs_chroot dpkg --print-architecture)/Packages.gz"; then
(
set -x
sed -i "
p;
s/ $suite / ${suite}-updates /
" "$rootfsDir/etc/apt/sources.list"
echo "deb http://security.debian.org $suite/updates main" >> "$rootfsDir/etc/apt/sources.list"
)
fi
;;
ubuntu)
# add the updates and security repositories
(
set -x
sed -i "
p;
s/ $suite / ${suite}-updates /; p;
s/ $suite-updates / ${suite}-security /
" "$rootfsDir/etc/apt/sources.list"
)
;;
tanglu)
# add the updates repository
if [ "$suite" != 'devel' ]; then
(
set -x
sed -i "
p;
s/ $suite / ${suite}-updates /
" "$rootfsDir/etc/apt/sources.list"
)
fi
;;
steamos)
# add contrib and non-free if "main" is the only component
(
set -x
sed -i "s/ $suite main$/ $suite main contrib non-free/" "$rootfsDir/etc/apt/sources.list"
)
;;
esac
fi
(
set -x
# make sure we're fully up-to-date
rootfs_chroot sh -xc 'apt-get update && apt-get dist-upgrade -y'
# delete all the apt list files since they're big and get stale quickly
rm -rf "$rootfsDir/var/lib/apt/lists"/*
# this forces "apt-get update" in dependent images, which is also good
mkdir "$rootfsDir/var/lib/apt/lists/partial" # Lucid... "E: Lists directory /var/lib/apt/lists/partial is missing."
)

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@ -1,70 +0,0 @@
#!/usr/bin/env bash
#
# Needs to be run from Mageia 4 or greater for kernel support for docker.
#
# Mageia 4 does not have docker available in official repos, so please
# install and run the docker binary manually.
#
# Tested working versions are for Mageia 2 onwards (inc. cauldron).
#
set -e
rootfsDir="$1"
shift
optTemp=$(getopt --options '+v:,m:' --longoptions 'version:,mirror:' --name mageia-urpmi -- "$@")
eval set -- "$optTemp"
unset optTemp
installversion=
mirror=
while true; do
case "$1" in
-v | --version)
installversion="$2"
shift 2
;;
-m | --mirror)
mirror="$2"
shift 2
;;
--)
shift
break
;;
esac
done
if [ -z $installversion ]; then
# Attempt to match host version
if [ -r /etc/mageia-release ]; then
installversion="$(sed 's/^[^0-9\]*\([0-9.]\+\).*$/\1/' /etc/mageia-release)"
else
echo "Error: no version supplied and unable to detect host mageia version"
exit 1
fi
fi
if [ -z $mirror ]; then
# No mirror provided, default to mirrorlist
mirror="--mirrorlist https://mirrors.mageia.org/api/mageia.$installversion.x86_64.list"
fi
(
set -x
urpmi.addmedia --distrib \
$mirror \
--urpmi-root "$rootfsDir"
urpmi basesystem-minimal urpmi \
--auto \
--no-suggests \
--urpmi-root "$rootfsDir" \
--root "$rootfsDir"
)
"$(dirname "$BASH_SOURCE")/.febootstrap-minimize" "$rootfsDir"
if [ -d "$rootfsDir/etc/sysconfig" ]; then
# allow networking init scripts inside the container to work without extra steps
echo 'NETWORKING=yes' > "$rootfsDir/etc/sysconfig/network"
fi

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@ -1,25 +0,0 @@
#!/usr/bin/env bash
set -e
rootfsDir="$1"
shift
# specifying --arch below is safe because "$@" can override it and the "latest" one wins :)
(
set -x
rinse --directory "$rootfsDir" --arch amd64 "$@"
)
"$(dirname "$BASH_SOURCE")/.febootstrap-minimize" "$rootfsDir"
if [ -d "$rootfsDir/etc/sysconfig" ]; then
# allow networking init scripts inside the container to work without extra steps
echo 'NETWORKING=yes' > "$rootfsDir/etc/sysconfig/network"
fi
# make sure we're fully up-to-date, too
(
set -x
chroot "$rootfsDir" yum update -y
)