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https://github.com/aljazceru/kata-containers.git
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8fbf6c4e14
Use `multistrap` for building Ubuntu rootfs. Adds support for building for foreign architectures using the `ARCH` environment variable (including umoci). In the process, the Ubuntu rootfs workflow is vastly simplified. Signed-off-by: Jakob Naucke <jakob.naucke@ibm.com>
45 lines
1.4 KiB
Bash
45 lines
1.4 KiB
Bash
# Copyright (c) 2018 Yash Jain, 2022 IBM Corp.
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#
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# SPDX-License-Identifier: Apache-2.0
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build_rootfs() {
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local rootfs_dir=$1
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local multistrap_conf=multistrap.conf
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[ -z "$rootfs_dir" ] && die "need rootfs"
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[ "$rootfs_dir" = "/" ] && die "rootfs cannot be slash"
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# For simplicity's sake, use multistrap for foreign and native bootstraps.
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cat > "$multistrap_conf" << EOF
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[General]
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cleanup=true
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aptsources=Ubuntu
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bootstrap=Ubuntu
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[Ubuntu]
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source=$REPO_URL
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keyring=ubuntu-keyring
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suite=focal
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packages=$PACKAGES $EXTRA_PKGS
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EOF
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multistrap -a "$DEB_ARCH" -d "$rootfs_dir" -f "$multistrap_conf"
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rm -rf "$rootfs_dir/var/run"
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ln -s /run "$rootfs_dir/var/run"
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for file in /etc/{resolv.conf,ssl/certs/ca-certificates.crt}; do
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mkdir -p "$rootfs_dir$(dirname $file)"
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cp --remove-destination "$file" "$rootfs_dir$file"
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done
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# Reduce image size and memory footprint by removing unnecessary files and directories.
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rm -rf $rootfs_dir/usr/share/{bash-completion,bug,doc,info,lintian,locale,man,menu,misc,pixmaps,terminfo,zsh}
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if [ "${AA_KBC}" == "eaa_kbc" ] && [ "${ARCH}" == "x86_64" ]; then
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curl -L http://mirrors.openanolis.cn/inclavare-containers/ubuntu20.04/DEB-GPG-KEY.key | chroot "$rootfs_dir" apt-key add -
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cat << EOF | chroot "$rootfs_dir"
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echo 'deb [arch=amd64] http://mirrors.openanolis.cn/inclavare-containers/ubuntu20.04 bionic main' | tee /etc/apt/sources.list.d/inclavare-containers.list
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apt-get update
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apt-get install -y rats-tls
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EOF
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fi
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}
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