Initial work for building alpine image.
We are downloading a base alpine filesystem and launching a jail inside of it. Still need to install docker, build an initfs, set up EFI, and actually dump it all into an image.
This commit is contained in:
Tom Alexander
parent
8b1169a684
commit
d5b80b6a03
GPG Key ID:
D3A179C9A53C0EDE
175
scripts/build_image/build_alpine.bash
Executable file
175
scripts/build_image/build_alpine.bash
Executable file
@ -0,0 +1,175 @@
|
||||
#!/usr/bin/env bash
|
||||
#
|
||||
set -euo pipefail
|
||||
IFS=$'\n\t'
|
||||
DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
|
||||
|
||||
############## Setup #########################
|
||||
|
||||
function cleanup {
|
||||
for f in "${folders[@]}"; do
|
||||
>&2 echo "Deleting $f"
|
||||
rm -rf "$f"
|
||||
done
|
||||
}
|
||||
folders=()
|
||||
for sig in EXIT INT QUIT HUP TERM; do
|
||||
trap "set +e; cleanup" "$sig"
|
||||
done
|
||||
|
||||
function die {
|
||||
local status_code="$1"
|
||||
shift
|
||||
>&2 echo "${@}"
|
||||
exit "$status_code"
|
||||
}
|
||||
|
||||
function log {
|
||||
>&2 echo "${@}"
|
||||
}
|
||||
|
||||
############## Config Settings ###############
|
||||
|
||||
# These are below the Setup in case I end up creating things that need
|
||||
# to be cleaned up
|
||||
|
||||
# Cache for local development to avoid stressing alpine servers
|
||||
: ${NETIZEN_CACHE:="/tmp"}
|
||||
: ${LOCAL_DEV:="false"}
|
||||
|
||||
: ${ALPINE_TARBALL:="alpine-minirootfs-3.15.0-x86_64.tar.gz"}
|
||||
: ${ALPINE_SHA256:="ec7ec80a96500f13c189a6125f2dbe8600ef593b87fc4670fe959dc02db727a2"}
|
||||
: ${ALPINE_SIGNATURE:="-----BEGIN PGP SIGNATURE-----
|
||||
|
||||
iQIzBAABCgAdFiEEBILYQCL1LfHE581DKTrNCQfZSVoFAmGeGqEACgkQKTrNCQfZ
|
||||
SVp4Ww/+MzjBfj+33+0QxesuW/4ZGTShK6E+Hi7bXH04kparCEL77pdBnyYTfTjW
|
||||
Myt2BdPPze6upbsTJjDezpoKkza47ODD5MwsT22Utm4+zJUcHVAUiRKkm57lUuF0
|
||||
60DldhNj1K5sUrZgfPq+QIkJLsKZtUEoCx3lf1Ou0cRb+5P6nxnRNqqqpcwXaoJr
|
||||
mhoH/YCH6f+HydbXRcHX9hwdAlCj3LnOn2m6kwppdl6sWSp7yUXkjn1grKN7bnzy
|
||||
lzevA2aJJGc1S4qATYflaQcsWCcBJZ/Y1cAAl8OPLB+SYtmXbEJyluH5O7PsMGRg
|
||||
Ni0XQvqvYT8RosleRLuJKu7dc2626cwHRZj6CJhfpjvFvPvwvnHWSjRrXYmcERpj
|
||||
MWlyYbubF167mUb3qB2MlS58G6nsHmruejkLLe0+CJsNw7AGu2D/kB2MrJylLLvj
|
||||
CV3aFJoqrsAbaUrAl9kmgE2UPjOaUl1lld+y/tnDmN4o0FsBCPLc+Zve29qkNP8P
|
||||
AUeit46pKrAPEQpHFNE5bPZsZA6aR6SLRMPnVNQl57O8F+wAGe5gpvNeb24Q80PY
|
||||
CB/YX6tY0dlY352Vd1kveO73YZuLzyuP35yKreFUQEyWlGYEgivkI9AZLX+LGS0f
|
||||
QsATDB/JXW6pEivbW3r5v/iH0633JE2xMbI9rsP2nSrtXT5uMCw=
|
||||
=Wb5G
|
||||
-----END PGP SIGNATURE-----"}
|
||||
: ${ALPINE_KEY:="-----BEGIN PGP PUBLIC KEY BLOCK-----
|
||||
Version: GnuPG v2
|
||||
|
||||
mQINBFSIEDwBEADbib88gv1dBgeEez1TIh6A5lAzRl02JrdtYkDoPr5lQGYv0qKP
|
||||
lWpd3jgGe8n90krGmT9W2nooRdyZjZ6UPbhYSJ+tub6VuKcrtwROXP2gNNqJA5j3
|
||||
vkXQ40725CVig7I3YCpzjsKRStwegZAelB8ZyC4zb15J7YvTVkd6qa/uuh8H21X2
|
||||
h/7IZJz50CMxyz8vkdyP2niIGZ4fPi0cVtsg8l4phbNJ5PwFOLMYl0b5geKMviyR
|
||||
MxxQ33iNa9X+RcWeR751IQfax6xNcbOrxNRzfzm77fY4KzBezcnqJFnrl/p8qgBq
|
||||
GHKmrrcjv2MF7dCWHGAPm1/vdPPjUpOcEOH4uGvX7P4w2qQ0WLBTDDO47/BiuY9A
|
||||
DIwEF1afNXiJke4fmjDYMKA+HrnhocvI48VIX5C5+C5aJOKwN2EOpdXSvmsysTSt
|
||||
gIc4ffcaYugfAIEn7ZdgcYmTlbIphHmOmOgt89J+6Kf9X6mVRmumI3cZWetf2FEV
|
||||
fS9v24C2c8NRw3LESoDT0iiWsCHcsixCYqqvjzJBJ0TSEIVCZepOOBp8lfMl4YEZ
|
||||
BVMzOx558LzbF2eR/XEsr3AX7Ga1jDu2N5WzIOa0YvJl1xcQxc0RZumaMlZ81dV/
|
||||
uu8G2+HTrJMZK933ov3pbxaZ38/CbCA90SBk5xqVqtTNAHpIkdGj90v2lwARAQAB
|
||||
tCVOYXRhbmFlbCBDb3BhIDxuY29wYUBhbHBpbmVsaW51eC5vcmc+iQI2BBMBCAAg
|
||||
BQJUiBA8AhsDBQsJCAcCBhUICQoLAgMWAgECHgECF4AACgkQKTrNCQfZSVrcNxAA
|
||||
mEzX9PQaczzlPAlDe3m1AN0lP6E/1pYWLBGs6qGh18cWxdjyOWsO47nA1P+cTGSS
|
||||
AYe4kIOIx9kp2SxObdKeZTuZCBdWfQu/cuRE12ugQQFERlpwVRNd6NYuT3WyZ7v8
|
||||
ZXRw4f33FIt4CSrW1/AyM/vrA+tWNo7bbwr/CFaIcL8kINPccdFOpWh14erONd/P
|
||||
Eb3gO81yXIA6c1Vl4mce2JS0hd6EFohxS5yMQJMRIS/Zg8ufT3yHJXIaSnG+KRP7
|
||||
WWLR0ZaLraCykYi/EW9mmQ49LxQqvKOgjpRW9aNgDA+arKl1umjplkAFI1GZ0/qA
|
||||
sgKm4agdvLGZiCZqDXcRWNolG5PeOUUpim1f59pGnupZ3Rbz4BF84U+1uL+yd0OR
|
||||
5Y98AxWFyq0dqKz/zFYwQkMVnl9yW0pkJmP7r6PKj0bhWksQX+RjYPosj3wxPZ7i
|
||||
SKMX7xZaqon/CHpH9/Xm8CabGcDITrS6h+h8x0FFT/MV/LKgc3q8E4mlXelew1Rt
|
||||
xK4hzXFpXKl0WcQg54fj1Wqy47FlkArG50di0utCBGlmVZQA8nqE5oYkFLppiFXz
|
||||
1SXCXojff/XZdNF2WdgV8aDKOYTK1WDPUSLmqY+ofOkQL49YqZ9M5FR8hMAbvL6e
|
||||
4CbxVXCkWJ6Q9Lg79AzS3pvOXCJ/CUDQs7B30v026Ba5Ag0EVIgQPAEQAMHuPAv/
|
||||
B0KP9SEA1PsX5+37k46lTP7lv7VFd7VaD1rAUM/ZyD2fWgrJprcCPEpdMfuszfOH
|
||||
jGVQ708VQ+vlD3vFoOZE+KgeKnzDG9FzYXXPmxkWzEEqI168ameF/LQhN12VF1mq
|
||||
5LbukiAKx2ytb1I8onvCvNJDvH1D/3BxSj7ThV9bP/bFufcOHFBMFwtyBmUaR5Wx
|
||||
96Bq+7DEbTrxhshoQgUqILEudUyhZa05/TrpUvC4f8qc0deaqJFO1zD6guZxRWZd
|
||||
SWJdcFzTadyg36P4eyFMxa1Ft7BlDKdKLAFlCGgR0jfOnKRmdRKGRNFTLQ68aBld
|
||||
N4wxBuMwe0tmRw9zYwWwD43Aq9E26YtuxVR1wb3zUmi+47QH4ANAzMioimE9Mj5S
|
||||
qYrgzQJ0IGwIjBt+HNzHvYX+kyMuVFK41k2Vo6oUOVHuQMu3UgLvSPMsyw69d+Iw
|
||||
K/rrsQwuutrvJ8Qcda3rea1HvWBVcY/uyoRsOsCS7itS6MK6KKTKaW8iskmEb2/h
|
||||
Q1ZB1QaWm2sQ8Xcmb3QZgtyBfZKuC95T/mAXPT0uET6bTpP5DdEi3wFs+qw/c9FZ
|
||||
SNDZ4hfNuS24d2u3Rh8LWt/U83ieAutNntOLGhvuZm1jLYt2KvzXE8cLt3V75/ZF
|
||||
O+xEV7rLuOtrHKWlzgJQzsDp1gM4Tz9ULeY7ABEBAAGJAh8EGAEIAAkFAlSIEDwC
|
||||
GwwACgkQKTrNCQfZSVrIgBAArhCdo3ItpuEKWcxx22oMwDm+0dmXmzqcPnB8y9Tf
|
||||
NcocToIXP47H1+XEenZdTYZJOrdqzrK6Y1PplwQv6hqFToypgbQTeknrZ8SCDyEK
|
||||
cU4id2r73THTzgNSiC4QAE214i5kKd6PMQn7XYVjsxvin3ZalS2x4m8UFal2C9nj
|
||||
o8HqoTsDOSRy0mzoqAqXmeAe3X9pYme/CUwA6R8hHEgX7jUhm/ArVW5wZboAinw5
|
||||
BmKBjWiIwT1vxfvwgbC0EA1O24G4zQqEJ2ILmcM3RvWwtFFWasQqV7qnKdpD8EIb
|
||||
oPa8Ocl7joDc5seK8BzsI7tXN4Yjw0aHCOlZ15fWHPYKgDFRQaRFffODPNbxQNiz
|
||||
Yru3pbEWDLIUoQtJyKl+o2+8m4aWCYNzJ1WkEQje9RaBpHNDcyen5yC73tCEJsvT
|
||||
ZuMI4Xqc4xgLt8woreKE57GRdg2fO8fO40X3R/J5YM6SqG7y2uwjVCHFBeO2Nkkr
|
||||
8nOno+Rbn2b03c9MapMT4ll8jJds4xwhhpIjzPLWd2ZcX/ZGqmsnKPiroe9p1VPo
|
||||
lN72Ohr9lS+OXfvOPV2N+Ar5rCObmhnYbXGgU/qyhk1qkRu+w2bBZOOQIdaCfh5A
|
||||
Hbn3ZGGGQskgWZDFP4xZ3DWXFSWMPuvEjbmUn2xrh9oYsjsOGy9tyBFFySU2vyZP
|
||||
Mkc=
|
||||
=FcYC
|
||||
-----END PGP PUBLIC KEY BLOCK-----"}
|
||||
|
||||
############## Main Script ###################
|
||||
|
||||
function precheck {
|
||||
# Checks to run before building the image
|
||||
if ! grep -q 'linux.ko' <<<"$(kldstat)"; then
|
||||
die 1 "Need linux kernel module for building initramfs."
|
||||
fi
|
||||
|
||||
for bin in gpg sha256; do
|
||||
if ! command -V "$bin" &> /dev/null; then
|
||||
die 1 "Need $bin installed."
|
||||
fi
|
||||
done
|
||||
}
|
||||
|
||||
function make_chroot {
|
||||
bsdtar -C "$chroot" -xpf "${download_directory}/${ALPINE_TARBALL}"
|
||||
|
||||
# Steal the DNS info from the host
|
||||
(umask 022 && resolvconf -l > "${chroot}/etc/resolv.conf")
|
||||
|
||||
# Enter the jail
|
||||
# install mkinitfs
|
||||
sudo jail -c path="$chroot" ip4=inherit ip6=inherit host=inherit allow.raw_sockets=true command=/bin/sh
|
||||
|
||||
# Remove the resolv.conf file since it should get populated via dhcp
|
||||
rm "${chroot}/etc/resolv.conf"
|
||||
}
|
||||
|
||||
function download_alpine {
|
||||
if [ "$LOCAL_DEV" == "true" ] && [ -e "${NETIZEN_CACHE}/${ALPINE_TARBALL}" ]; then
|
||||
# Cache for local development to avoid stressing alpine servers
|
||||
fetch -o "${download_directory}/" "file://${NETIZEN_CACHE}/${ALPINE_TARBALL}"
|
||||
else
|
||||
fetch -o "${download_directory}/" "https://dl-cdn.alpinelinux.org/alpine/v3.15/releases/x86_64/${ALPINE_TARBALL}"
|
||||
if [ "$LOCAL_DEV" == "true" ]; then
|
||||
cp "${download_directory}/${ALPINE_TARBALL}" /tmp/
|
||||
fi
|
||||
fi
|
||||
|
||||
# Validate
|
||||
sha256 -c "$ALPINE_SHA256" "${download_directory}/${ALPINE_TARBALL}"
|
||||
|
||||
local keyring="$work_directory/keyring"
|
||||
gpg --no-default-keyring --keyring "$keyring" --trust-model always --import <<<"$ALPINE_KEY"
|
||||
gpg --no-default-keyring --keyring "$keyring" --trust-model always --verify <(cat <<<"$ALPINE_SIGNATURE") "${download_directory}/${ALPINE_TARBALL}"
|
||||
}
|
||||
|
||||
function main {
|
||||
precheck
|
||||
|
||||
work_directory=$(mktemp -d -t dib)
|
||||
folders+=("$work_directory")
|
||||
|
||||
download_directory="${work_directory}/downloads"
|
||||
mkdir "$download_directory"
|
||||
download_alpine
|
||||
|
||||
chroot="${work_directory}/chroot"
|
||||
mkdir "$chroot"
|
||||
log "Building chroot in $chroot"
|
||||
make_chroot
|
||||
}
|
||||
|
||||
main
|
||||
Loading…
Reference in New Issue
Block a user