mirror of
https://github.com/moby/moby.git
synced 2022-11-09 12:21:53 -05:00
7e42505083
These new scripts are streamlined such that, for example, "contrib/mkimage/debootstrap" is _only_ responsible for filling a directory with the results of running debootstrap, and it can accept any arbitrary arguments. Docker-DCO-1.1-Signed-off-by: Andrew Page <admwiggin@gmail.com> (github: tianon)
105 lines
2.6 KiB
Bash
Executable file
105 lines
2.6 KiB
Bash
Executable file
#!/usr/bin/env bash
|
|
set -e
|
|
|
|
mkimg="$(basename "$0")"
|
|
|
|
usage() {
|
|
echo >&2 "usage: $mkimg [-d dir] [-t tag] script [script-args]"
|
|
echo >&2 " ie: $mkimg -t someuser/debian debootstrap --variant=minbase jessie"
|
|
echo >&2 " $mkimg -t someuser/ubuntu debootstrap --include=ubuntu-minimal trusty"
|
|
echo >&2 " $mkimg -t someuser/busybox busybox-static"
|
|
echo >&2 " $mkimg -t someuser/centos:5 rinse --distribution centos-5"
|
|
exit 1
|
|
}
|
|
|
|
scriptDir="$(dirname "$(readlink -f "$BASH_SOURCE")")/mkimage"
|
|
|
|
optTemp=$(getopt --options '+d:t:h' --longoptions 'dir:,tag:,help' --name "$mkimg" -- "$@")
|
|
eval set -- "$optTemp"
|
|
unset optTemp
|
|
|
|
dir=
|
|
tag=
|
|
while true; do
|
|
case "$1" in
|
|
-d|--dir) dir="$2" ; shift 2 ;;
|
|
-t|--tag) tag="$2" ; shift 2 ;;
|
|
-h|--help) usage ;;
|
|
--) shift ; break ;;
|
|
esac
|
|
done
|
|
|
|
script="$1"
|
|
[ "$script" ] || usage
|
|
shift
|
|
|
|
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 ${TMPDIR:-/tmp}/docker-mkimage.XXXXXXXXXX)"
|
|
delDir=1
|
|
fi
|
|
|
|
rootfsDir="$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.xz"
|
|
touch "$tarFile"
|
|
|
|
(
|
|
set -x
|
|
tar --numeric-owner -caf "$tarFile" -C "$rootfsDir" --transform='s,^./,,' .
|
|
)
|
|
|
|
echo >&2 "+ cat > '$dir/Dockerfile'"
|
|
cat > "$dir/Dockerfile" <<'EOF'
|
|
FROM scratch
|
|
ADD rootfs.tar.xz /
|
|
EOF
|
|
|
|
# if our generated image has a decent shell, let's set a default command
|
|
for shell in /bin/bash /usr/bin/fish /usr/bin/zsh /bin/sh; do
|
|
if [ -x "$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
|