kata-containers/tools/osbuilder/rootfs-builder/alpine/rootfs_lib.sh
Jakob Naucke 0f7db91c0f
osbuilder: Revert to using apk.static for Alpine
#2399 partially reverted #418, missing on returning to bootstrapping a
rootfs with `apk.static` instead of copying the entire root, which can
result in drastically larger (more than 10x) images. Revert this as well
(requires some updates to URL building).

Fixes: #3216
Signed-off-by: Jakob Naucke <jakob.naucke@ibm.com>
2021-12-09 16:47:43 +01:00

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#!/bin/bash
#
# Copyright (c) 2018 HyperHQ Inc.
#
# SPDX-License-Identifier: Apache-2.0
# - Arguments
# rootfs_dir=$1
#
# - Optional environment variables
#
# EXTRA_PKGS: Variable to add extra PKGS provided by the user
#
# BIN_AGENT: Name of the Kata-Agent binary
#
# Any other configuration variable for a specific distro must be added
# and documented on its own config.sh
#
# - Expected result
#
# rootfs_dir populated with rootfs pkgs
# It must provide a binary in /sbin/init
build_rootfs() {
# Mandatory
local ROOTFS_DIR=$1
# Add extra packages to the rootfs when specified
local EXTRA_PKGS=${EXTRA_PKGS:-}
# Populate ROOTFS_DIR
check_root
mkdir -p "${ROOTFS_DIR}"
/sbin/apk.static \
-X ${MIRROR}/v${OS_VERSION}/main \
-U \
--allow-untrusted \
--root ${ROOTFS_DIR} \
--initdb add ${BASE_PACKAGES} ${EXTRA_PKGS} ${PACKAGES}
mkdir -p ${ROOTFS_DIR}{/root,/etc/apk,/proc}
echo "${MIRROR}/v${OS_VERSION}/main" > ${ROOTFS_DIR}/etc/apk/repositories
}