docker/contrib/mkimage/debootstrap

126 строки
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#!/usr/bin/env bash
set -e
rootfsDir="$1"
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="$1"
shift
(
set -x
debootstrap "${before[@]}" "$suite" "$rootfsDir" "$@"
)
# now for some Docker-specific tweaks
# prevent init scripts from running during install/update
echo >&2 "+ cat > '$rootfsDir/usr/sbin/policy-rc.d'"
cat > "$rootfsDir/usr/sbin/policy-rc.d" <<'EOF'
#!/bin/sh
exit 101
EOF
chmod +x "$rootfsDir/usr/sbin/policy-rc.d"
# prevent upstart scripts from running during install/update
(
set -x
chroot "$rootfsDir" dpkg-divert --local --rename --add /sbin/initctl
ln -sf /bin/true "$rootfsDir/sbin/initctl"
)
# shrink the image, since apt makes us fat (wheezy: ~157.5MB vs ~120MB)
( set -x; chroot "$rootfsDir" apt-get clean )
# Ubuntu 10.04 sucks... :)
if strings "$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 > '$rootfsDir/etc/dpkg/dpkg.cfg.d/docker-apt-speedup'"
echo 'force-unsafe-io' > "$rootfsDir/etc/dpkg/dpkg.cfg.d/docker-apt-speedup"
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
DPkg::Post-Invoke { ${aptGetClean} };
APT::Update::Post-Invoke { ${aptGetClean} };
Dir::Cache::pkgcache "";
Dir::Cache::srcpkgcache "";
EOF
# remove apt-cache translations for fast "apt-get update"
echo >&2 "+ cat > '$rootfsDir/etc/apt/apt.conf.d/docker-no-languages'"
echo 'Acquire::Languages "none";' > "$rootfsDir/etc/apt/apt.conf.d/docker-no-languages"
fi
if [ -z "$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
case "$lsbDist" in
debian|Debian)
# updates and security!
if [ "$suite" != 'sid' -a "$suite" != 'unstable' ]; then
(
set -x
sed -i "p; s/ $suite main$/ ${suite}-updates main/" "$rootfsDir/etc/apt/sources.list"
echo "deb http://security.debian.org $suite/updates main" >> "$rootfsDir/etc/apt/sources.list"
)
fi
;;
ubuntu|Ubuntu)
# add the universe, updates, and security repositories
(
set -x
sed -i "
s/ $suite main$/ $suite main universe/; p;
s/ $suite main/ ${suite}-updates main/; p;
s/ $suite-updates main/ ${suite}-security main/
" "$rootfsDir/etc/apt/sources.list"
)
;;
tanglu|Tanglu)
# add the updates repository
if [ "$suite" != 'devel' ]; then
(
set -x
sed -i "p; s/ $suite main$/ ${suite}-updates main/" "$rootfsDir/etc/apt/sources.list"
)
fi
;;
steamos|SteamOS)
# add contrib and non-free
(
set -x
sed -i "s/ $suite main$/ $suite main contrib non-free/" "$rootfsDir/etc/apt/sources.list"
)
;;
esac
fi
# make sure we're fully up-to-date, too
(
set -x
chroot "$rootfsDir" apt-get update
chroot "$rootfsDir" apt-get dist-upgrade -y
)