mirror of
https://github.com/linuxkit/linuxkit.git
synced 2025-09-29 04:26:16 +00:00
9fe9e95349
Better split between content and tools. Signed-off-by: Justin Cormack <justin.cormack@docker.com>
47 lines
1.0 KiB
Bash
Executable File
47 lines
1.0 KiB
Bash
Executable File
#!/bin/sh
|
|
|
|
set -e
|
|
|
|
# arguments are image name
|
|
# This script will output a tarball, suitable to be turned into a cpio archive
|
|
# This is a bit hacky, should be improved later, as it hardcodes config.
|
|
|
|
IMAGE="$1"; shift
|
|
|
|
cd /tmp
|
|
|
|
# extract rootfs
|
|
EXCLUDE="--exclude .dockerenv --exclude Dockerfile \
|
|
--exclude dev/console --exclude dev/pts --exclude dev/shm \
|
|
--exclude etc/hostname --exclude etc/hosts --exclude etc/mtab --exclude etc/resolv.conf"
|
|
|
|
CONTAINER="$(docker create $IMAGE /dev/null)"
|
|
docker export "$CONTAINER" | tar -xf - $EXCLUDE
|
|
docker rm "$CONTAINER" > /dev/null
|
|
|
|
# these three files are bind mounted in by docker so they are not what we want
|
|
|
|
mkdir -p etc
|
|
|
|
cat << EOF > etc/hosts
|
|
127.0.0.1 localhost
|
|
::1 localhost ip6-localhost ip6-loopback
|
|
fe00::0 ip6-localnet
|
|
ff00::0 ip6-mcastprefix
|
|
ff02::1 ip6-allnodes
|
|
ff02::2 ip6-allrouters
|
|
EOF
|
|
|
|
cat << EOF > etc/resolv.conf
|
|
nameserver 8.8.8.8
|
|
nameserver 8.8.4.4
|
|
nameserver 2001:4860:4860::8888
|
|
nameserver 2001:4860:4860::8844
|
|
EOF
|
|
|
|
printf 'moby' > etc/hostname
|
|
|
|
ln -s /proc/mounts etc/mtab
|
|
|
|
tar cf - .
|