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Merge pull request #63 from erick0z/erick0z/refactor_rootfs_script

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rootfs-builder: Refactor rootfs.sh
This commit is contained in:
Eric Ernst
2018-04-04 07:39:11 -07:00
committed by GitHub
parent 1c45f4f666 52022701db
commit 2b2b68d6fa
14 changed files with 142 additions and 419 deletions
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18
rootfs-builder/README.md
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@@ -104,14 +104,6 @@ must be met:
The `rootfs.sh` script will check for immediate sub-directories
containing the following expected files:
- A `bash(1)` script called `rootfs_lib.sh`
This file must contain a function called `build_rootfs()`, which must
receive the path to where the rootfs is created, as its first argument.
Path: `rootfs-builder/<distro>/rootfs_lib.sh`.
- A `bash(1)` script called `config.sh`
This represents the specific configuration for `<distro>`. It must
@@ -121,6 +113,16 @@ containing the following expected files:
Path: `rootfs-builder/<distro>/config.sh`.
- (OPTIONAL) A `bash(1)` script called `rootfs_lib.sh`
This file must contain a function called `build_rootfs()`, which must
receive the path to where the rootfs is created, as its first argument.
Normally, this file is needed if a new distro with a special requirement
is needed. This function will override the `build_rootfs()` function in
`scripts/lib.sh`.
Path: `rootfs-builder/<distro>/rootfs_lib.sh`.
### Create template files
To create a directory with the expected file structure run:

15
rootfs-builder/alpine/config.sh
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@@ -1,23 +1,18 @@
# This is a configuration file add extra variables to
# be used by build_rootfs() from rootfs_lib.sh the variables will be
# loaded just before call the function.
#
# Copyright (c) 2018 Intel Corporation
#
# SPDX-License-Identifier: Apache-2.0
# Here there are a couple of variables you may need.
# Remove them or add more
OS_NAME="Alpine"
# alpine version
OS_VERSION=${OS_VERSION:-v3.7}
# Essential base packages
BASE_PACKAGES="alpine-base"
# Alpine mirror to use
# See a list of mirrors at http://nl.alpinelinux.org/alpine/MIRRORS.txt
MIRROR=http://dl-5.alpinelinux.org/alpine
# Default Architecture
ARCH=${ARCH:-x86_64}
# Mandatory Packages that must be installed
# - iptables: Need by Kata agent
PACKAGES="iptables"

8
rootfs-builder/alpine/rootfs_lib.sh
View File

@@ -4,14 +4,6 @@
#
# SPDX-License-Identifier: Apache-2.0
check_root()
{
if [ "$(id -u)" != "0" ]; then
echo "Root is needed"
exit 1
fi
}
# - Arguments
# rootfs_dir=$1
#

26
rootfs-builder/centos/config.sh
View File

@@ -1,15 +1,25 @@
# This is a configuration file add extra variables to
# be used by build_rootfs() from rootfs_lib.sh the variables will be
# loaded just before call the function.
#
# Copyright (c) 2018 Intel Corporation
#
# SPDX-License-Identifier: Apache-2.0
# Here there are a couple of variables you may need.
# Remove them or add more
OS_NAME="Centos"
# Centos Version
OS_VERSION=${OS_VERSION:-7}
#Mandatory Packages that must be installed
# iptables: Need by Kata agent
LOG_FILE="/var/log/yum-centos.log"
MIRROR_LIST="http://mirrorlist.centos.org/?release=${OS_VERSION}&arch=${ARCH}&repo=os&container=container"
# Aditional Repos
CENTOS_UPDATES_URL="http://mirrorlist.centos.org/?release=${OS_VERSION}&arch=${ARCH}&repo=updates&container=container"
CENTOS_EXTRAS_URL="http://mirrorlist.centos.org/?release=${OS_VERSION}&arch=${ARCH}&repo=extras&container=container"
CENTOS_PLUS_URL="http://mirrorlist.centos.org/?release=${OS_VERSION}&arch=${ARCH}&repo=centosplus&container=container"
GPG_KEY_FILE="RPM-GPG-KEY-CentOS-7"
PACKAGES="iptables"
#Optional packages:

135
rootfs-builder/centos/rootfs_lib.sh
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@@ -1,135 +0,0 @@
#!/bin/bash
#
# Copyright (c) 2017 Intel Corporation
#
# SPDX-License-Identifier: Apache-2.0
check_program(){
type "$1" >/dev/null 2>&1
}
check_root()
{
if [ "$(id -u)" != "0" ]; then
echo "Root is needed"
exit 1
fi
}
generate_dnf_config()
{
cat > "${DNF_CONF}" << EOF
[main]
cachedir=/var/cache/centos-osbuilder
keepcache=0
debuglevel=2
logfile=/var/log/yum-centos.log
exactarch=1
obsoletes=1
gpgcheck=0
plugins=0
installonly_limit=3
#Dont use the default dnf reposdir
#this will prevent to use host repositories
reposdir=/root/mash
[base]
name=CentOS-7 - Base
mirrorlist=http://mirrorlist.centos.org/?release=7&arch=x86_64&repo=os&container=container
#baseurl=${REPO_URL}/os/x86_64/
gpgcheck=1
gpgkey=file://${CONFIG_DIR}/RPM-GPG-KEY-CentOS-7
#released updates
[updates]
name=CentOS-7 - Updates
mirrorlist=http://mirrorlist.centos.org/?release=7&arch=x86_64&repo=updates&container=container
#baseurl=${REPO_URL}/updates/x86_64/
gpgcheck=1
gpgkey=file://${CONFIG_DIR}/RPM-GPG-KEY-CentOS-7
#additional packages that may be useful
[extras]
name=CentOS-7 - Extras
mirrorlist=http://mirrorlist.centos.org/?release=7&arch=x86_64&repo=extras&container=container
#baseurl=${REPO_URL}/extras/x86_64/
gpgcheck=1
gpgkey=file://${CONFIG_DIR}/RPM-GPG-KEY-CentOS-7
#additional packages that extend functionality of existing packages
[centosplus]
name=CentOS-7 - Plus
mirrorlist=http://mirrorlist.centos.org/?release=7&arch=x86_64&repo=centosplus&container=container
#baseurl=${REPO_URL}/centosplus/x86_64/
gpgcheck=1
enabled=0
gpgkey=file://${CONFIG_DIR}/RPM-GPG-KEY-CentOS-7
EOF
}
# - 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
#
# REPO_URL: URL to distribution repository ( should be configured in
# config.sh file)
#
# 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=$1
#Name of the Kata-Agent binary
local BIN_AGENT=${BIN_AGENT}
# In case of support EXTRA packages, use it to allow
# users add more packages to the base rootfs
local EXTRA_PKGS=${EXTRA_PKGS:-}
#In case rootfs is created usign repositories allow user to modify
# the default URL
local REPO_URL=${REPO_URL:-http://mirror.centos.org/centos/7}
#PATH where files this script is placed
#Use it to refer to files in the same directory
#Exmaple: ${CONFIG_DIR}/foo
local CONFIG_DIR=${CONFIG_DIR}
# Populate ROOTFS_DIR
# Must provide /sbin/init and /bin/${BIN_AGENT}
check_root
if [ ! -f "${DNF_CONF}" ]; then
DNF_CONF="./kata-centos-dnf.conf"
generate_dnf_config
fi
mkdir -p "${ROOTFS_DIR}"
if [ -n "${PKG_MANAGER}" ]; then
info "DNF path provided by user: ${PKG_MANAGER}"
elif check_program "dnf"; then
PKG_MANAGER="dnf"
elif check_program "yum" ; then
PKG_MANAGER="yum"
else
die "neither yum nor dnf is installed"
fi
info "Using : ${PKG_MANAGER} to pull packages from ${REPO_URL}"
DNF="${PKG_MANAGER} --config=$DNF_CONF -y --installroot=${ROOTFS_DIR} --noplugins"
$DNF install ${EXTRA_PKGS} ${PACKAGES}
$DNF clean all
[ -n "${ROOTFS_DIR}" ] && rm -r "${ROOTFS_DIR}/var/cache/centos-osbuilder"
}

14
rootfs-builder/clearlinux/config.sh
View File

@@ -1,9 +1,19 @@
#
# Copyright (c) 2017 Intel Corporation
# Copyright (c) 2018 Intel Corporation
#
# SPDX-License-Identifier: Apache-2.0
#Use "latest" to always pull the last Clear Linux Release
OS_NAME="Clear"
OS_VERSION=${OS_VERSION:-latest}
BASE_URL="https://download.clearlinux.org/current/${ARCH}/os/"
REPO_NAME="clear"
PACKAGES="iptables-bin libudev0-shim"
#Optional packages:
# systemd: An init system that will start kata-agent if kata-agent
# itself is not configured as init process.
[ "$AGENT_INIT" == "no" ] && PACKAGES+=" systemd" || true

93
rootfs-builder/clearlinux/rootfs_lib.sh
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@@ -1,93 +0,0 @@
#!/bin/bash
#
# Copyright (c) 2017 Intel Corporation
#
# SPDX-License-Identifier: Apache-2.0
set -e
check_program(){
type "$1" >/dev/null 2>&1
}
generate_dnf_config()
{
echo "WARNING: using not signed packages"
cat > "${DNF_CONF}" << EOF
[main]
cachedir=/var/cache/dnf-clear
keepcache=0
debuglevel=2
logfile=/var/log/dnf.log
exactarch=1
obsoletes=1
gpgcheck=0
plugins=0
installonly_limit=3
#Dont use the default dnf reposdir
#this will prevent to use host repositories
reposdir=/root/mash
[clear]
name=Clear
failovermethod=priority
baseurl=${REPO_URL}
enabled=1
#Clear Linux based packages security limitations
#Although the Clear Linux rootfs is constructed from rpm packages, Clear Linux
#itself is not an rpm-based Linux distribution (the software installed on a
#Clear Linux system is not managed using rpm). The rpm packages used to
#generate the rootfs are not signed, so there is no way to ensure that
#downloaded packages are trustworthy.
gpgcheck=0
EOF
}
build_rootfs()
{
# Mandatory
local ROOTFS_DIR=$1
#In case rootfs is created usig repositories allow user to modify
# the default URL
local REPO_URL=${REPO_URL:-https://download.clearlinux.org/current/x86_64/os/}
# In case of support EXTRA packages, use it to allow
# users add more packages to the base rootfs
local EXTRA_PKGS=${EXTRA_PKGS:-}
#PATH where files this script is placed
#Use it to refer to files in the same directory
#Exmaple: ${CONFIG_DIR}/foo
#local CONFIG_DIR=${CONFIG_DIR}
check_root
if [ ! -f "${DNF_CONF}" ]; then
DNF_CONF="./clear-dnf.conf"
generate_dnf_config
fi
mkdir -p "${ROOTFS_DIR}"
if [ -n "${PKG_MANAGER}" ]; then
info "DNF path provided by user: ${PKG_MANAGER}"
elif check_program "dnf"; then
PKG_MANAGER="dnf"
elif check_program "yum" ; then
PKG_MANAGER="yum"
else
die "neither yum nor dnf is installed"
fi
info "Using : ${PKG_MANAGER} to pull packages from ${REPO_URL}"
DNF="${PKG_MANAGER} --config=$DNF_CONF -y --installroot=${ROOTFS_DIR} --noplugins"
$DNF install ${EXTRA_PKGS} ${PACKAGES}
[ -n "${ROOTFS_DIR}" ] && rm -r "${ROOTFS_DIR}/var/cache/dnf-clear"
}
check_root()
{
if [ "$(id -u)" != "0" ]; then
echo "Root is needed"
exit 1
fi
}

14
rootfs-builder/euleros/config.sh
View File

@@ -1,15 +1,11 @@
# This is a configuration file add extra variables to
# be used by build_rootfs() from rootfs_lib.sh the variables will be
# loaded just before call the function.
OS_NAME="EulerOS"
# Here there are a couple of variables you may need.
# Remove them or add more
# EulerOS Version
OS_VERSION=${OS_VERSION:-2.2}
#Mandatory Packages that must be installed
# iptables: Need by Kata agent
BASE_URL="http://developer.huawei.com/ict/site-euleros/euleros/repo/yum/${OS_VERSION}/os/${ARCH}/"
GPG_KEY_FILE="RPM-GPG-KEY-EulerOS"
PACKAGES="iptables"
#Optional packages:

100
rootfs-builder/euleros/rootfs_lib.sh
View File

@@ -1,100 +0,0 @@
#!/bin/bash
#
# Copyright (c) 2018 Huawei Technologies Co., Ltd
#
# SPDX-License-Identifier: Apache-2.0
check_program(){
type "$1" >/dev/null 2>&1
}
check_root()
{
if [ "$(id -u)" != "0" ]; then
echo "Root is needed"
exit 1
fi
}
generate_yum_config()
{
cat > "${DNF_CONF}" << EOF
[main]
cachedir=/var/cache/euleros-osbuilder
keepcache=0
debuglevel=2
logfile=/var/log/yum-euleros.log
exactarch=1
[Base]
name=EulerOS-${OS_VERSION} Base
baseurl=http://developer.huawei.com/ict/site-euleros/euleros/repo/yum/${OS_VERSION}/os/x86_64/
enabled=1
gpgcheck=1
gpgkey=file://${CONFIG_DIR}/RPM-GPG-KEY-EulerOS
EOF
}
# - 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
#
# REPO_URL: URL to distribution repository ( should be configured in
# config.sh file)
#
# 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=$1
#Name of the Kata-Agent binary
local BIN_AGENT=${BIN_AGENT}
# In case of support EXTRA packages, use it to allow
# users add more packages to the base rootfs
local EXTRA_PKGS=${EXTRA_PKGS:-}
#In case rootfs is created usign repositories allow user to modify
# the default URL
local REPO_URL=${REPO_URL:-http://developer.huawei.com/ict/site-euleros/euleros/repo/yum/2.2}
#PATH where files this script is placed
#Use it to refer to files in the same directory
#Exmaple: ${CONFIG_DIR}/foo
local CONFIG_DIR=${CONFIG_DIR}
# Populate ROOTFS_DIR
# Must provide /sbin/init and /bin/${BIN_AGENT}
check_root
if [ ! -f "{DNF_CONF}" ]; then
DNF_CONF="./kata-euleros-yum.repo"
generate_yum_config
fi
mkdir -p "${ROOTFS_DIR}"
if [ -n "${PKG_MANAGER}" ]; then
info "DNF path provided by user: ${PKG_MANAGER}"
elif check_program "yum" ; then
PKG_MANAGER="yum"
else
die "yum is not installed"
fi
info "Using : ${PKG_MANAGER} to pull packages from ${REPO_URL}"
DNF="${PKG_MANAGER} --config=$DNF_CONF -y --installroot=${ROOTFS_DIR} --noplugins"
$DNF install ${EXTRA_PKGS} ${PACKAGES}
[ -n "${ROOTFS_DIR}" ] && rm -r "${ROOTFS_DIR}/var/cache/euleros-osbuilder"
}

12
rootfs-builder/fedora/config.sh
View File

@@ -1,9 +1,17 @@
#
# Copyright (c) 2017 Intel Corporation
# Copyright (c) 2018 Intel Corporation
#
# SPDX-License-Identifier: Apache-2.0
#Fedora version to use
OS_NAME="Fedora"
OS_VERSION=${OS_VERSION:-27}
MIRROR_LIST="https://mirrors.fedoraproject.org/metalink?repo=fedora-${OS_VERSION}&arch=\$basearch"
PACKAGES="iptables"
#Optional packages:
# systemd: An init system that will start kata-agent if kata-agent
# itself is not configured as init process.
[ "$AGENT_INIT" == "no" ] && PACKAGES+=" systemd" || true

41
rootfs-builder/rootfs.sh
View File

@@ -1,6 +1,6 @@
#!/bin/bash
#
# Copyright (c) 2017 Intel Corporation
# Copyright (c) 2018 Intel Corporation
#
# SPDX-License-Identifier: Apache-2.0
@@ -8,17 +8,22 @@ set -e
script_name="${0##*/}"
script_dir="$(dirname $(readlink -f $0))"
ROOTFS_DIR=${ROOTFS_DIR:-${PWD}/rootfs}
AGENT_VERSION=${AGENT_VERSION:-master}
GO_AGENT_PKG=${GO_AGENT_PKG:-github.com/kata-containers/agent}
AGENT_BIN=${AGENT_BIN:-kata-agent}
AGENT_INIT=${AGENT_INIT:-no}
KERNEL_MODULES_DIR=${KERNEL_MODULES_DIR:-""}
# Default architecture
ARCH=${ARCH:-"x86_64"}
#Load default vesions for golang and other componets
source "${script_dir}/versions.txt"
# Name of file that will implement build_rootfs
# config file
typeset -r CONFIG_SH="config.sh"
# Name of the extra file that could implement build_rootfs
typeset -r LIB_SH="rootfs_lib.sh"
if [ -n "$DEBUG" ] ; then
@@ -78,7 +83,7 @@ OK()
get_distros() {
cdirs=$(find "${script_dir}" -maxdepth 1 -type d)
find ${cdirs} -maxdepth 1 -name "${LIB_SH}" -printf '%H\n' | while read dir; do
find ${cdirs} -maxdepth 1 -name "${CONFIG_SH}" -printf '%H\n' | while read dir; do
basename "${dir}"
done
}
@@ -163,17 +168,32 @@ shift $(($OPTIND - 1))
[ -n "${KERNEL_MODULES_DIR}" ] && [ ! -d "${KERNEL_MODULES_DIR}" ] && die "KERNEL_MODULES_DIR defined but is not an existing directory"
distro="$1"
init="${ROOTFS_DIR}/sbin/init"
[ -n "${distro}" ] || usage 1
distro_config_dir="${script_dir}/${distro}"
[ -d "${distro_config_dir}" ] || die "Not found configuration directory ${distro_config_dir}"
rootfs_lib="${distro_config_dir}/${LIB_SH}"
source "${rootfs_lib}"
rootfs_config="${distro_config_dir}/config.sh"
# Source config.sh from distro
rootfs_config="${distro_config_dir}/${CONFIG_SH}"
source "${rootfs_config}"
lib_file="${script_dir}/../scripts/lib.sh"
info "Source $lib_file"
[ -e "$lib_file" ] && source "$lib_file" || true
[ -d "${distro_config_dir}" ] || die "Not found configuration directory ${distro_config_dir}"
if [ -z "$ROOTFS_DIR" ]; then
ROOTFS_DIR="${script_dir}/rootfs-${OS_NAME}"
fi
init="${ROOTFS_DIR}/sbin/init"
if [ -e "${distro_config_dir}/${LIB_SH}" ];then
rootfs_lib="${distro_config_dir}/${LIB_SH}"
info "rootfs_lib.sh file found. Loading content"
source "${rootfs_lib}"
fi
CONFIG_DIR=${distro_config_dir}
check_function_exist "build_rootfs"
@@ -206,6 +226,7 @@ if [ -n "${USE_DOCKER}" ] ; then
--env EXTRA_PKGS="${EXTRA_PKGS}" \
-v "${script_dir}":"/osbuilder" \
-v "${ROOTFS_DIR}":"/rootfs" \
-v "${script_dir}/../scripts":"/scripts" \
-v "${kernel_mod_dir}":"${kernel_mod_dir}" \
-v "${GOPATH}":"${GOPATH}" \
${image_name} \
@@ -235,5 +256,5 @@ OK "Agent installed"
[ "${AGENT_INIT}" == "yes" ] && setup_agent_init "${ROOTFS_DIR}/usr/bin/${AGENT_BIN}" "${init}"
info "Check init is installed"
[ -x "${init}" ] || [ -L ${init} ] || die "/sbin/init is not installed in ${ROOTFS_DIR}"
[ -x "${init}" ] || [ -L "${init}" ] || die "/sbin/init is not installed in ${ROOTFS_DIR}"
OK "init is installed"

11
rootfs-builder/template/config_template.sh
View File

@@ -1,15 +1,8 @@
# This is a configuration file add extra variables to
# be used by build_rootfs() from rootfs_lib.sh the variables will be
# loaded just before call the function.
# loaded just before call the function. For more information see the
# rootfs-builder/README.md file.
# Here there are a couple of variables you may need.
# Remove them or add more
#Use it rootfs is based in a system has different versions
OS_VERSION=${OS_VERSION:-DEFAULT_VERSION}
#Mandatory Packages that must be installed
# systemd: An init system that will start kata-agent
# iptables: Need by Kata agent
# udevlib.so: Need by Kata agent
PACKAGES="systemd iptables udevlib.so"

6
rootfs-builder/template/rootfs_lib_template.sh
View File

@@ -17,6 +17,12 @@
#
# rootfs_dir populated with rootfs pkgs
# It must provide a binary in /sbin/init
#
# Note: For some distros, the build_rootfs() function provided in scripts/lib.sh
# will suffice. If a new distro is introduced with a special requirement,
# then, a rootfs_builder/<distro>/rootfs_lib.sh file should be created
# using this template.
build_rootfs() {
# Mandatory
local ROOTFS_DIR=$1

68
rootfs-builder/fedora/rootfs_lib.sh → scripts/lib.sh Executable file → Normal file
View File

@@ -1,6 +1,6 @@
#!/bin/bash
#
# Copyright (c) 2017 Intel Corporation
# Copyright (c) 2018 Intel Corporation
#
# SPDX-License-Identifier: Apache-2.0
@@ -10,37 +10,64 @@ check_program(){
type "$1" >/dev/null 2>&1
}
check_root()
{
if [ "$(id -u)" != "0" ]; then
echo "Root is needed"
exit 1
fi
}
generate_dnf_config()
{
REPO_NAME=${REPO_NAME:-"base"}
CACHE_DIR=${CACHE_DIR:-"/var/cache/dnf-${OS_NAME}"}
cat > "${DNF_CONF}" << EOF
[main]
cachedir=/var/cache/dnf/kata/
cachedir=${CACHE_DIR}
logfile=${LOG_FILE}
keepcache=0
debuglevel=2
logfile=/var/log/dnf.log
exactarch=1
obsoletes=1
gpgcheck=0
plugins=0
installonly_limit=3
#Dont use the default dnf reposdir
#this will prevent to use host repositories
reposdir=/root/mash
retries=5
[kata]
name=Fedora ${OS_VERSION} - \$basearch
failovermethod=priority
metalink=https://mirrors.fedoraproject.org/metalink?repo=fedora-${OS_VERSION}&arch=\$basearch
enabled=1
gpgcheck=0
EOF
if [ "$BASE_URL" != "" ]; then
cat >> "${DNF_CONF}" << EOF
[base]
name=${OS_NAME}-${OS_VERSION} ${REPO_NAME}
failovermethod=priority
baseurl=${BASE_URL}
enabled=1
EOF
elif [ "$MIRROR_LIST" != "" ]; then
cat >> "${DNF_CONF}" << EOF
[base]
name=${OS_NAME}-${OS_VERSION} ${REPO_NAME}
mirrorlist=${MIRROR_LIST}
enabled=1
EOF
fi
if [ "$GPG_KEY_FILE" != "" ]; then
cat >> "${DNF_CONF}" << EOF
gpgcheck=1
gpgkey=file://${CONFIG_DIR}/${GPG_KEY_FILE}
EOF
fi
}
build_rootfs()
{
# Mandatory
local ROOTFS_DIR=$1
local ROOTFS_DIR="$1"
# In case of support EXTRA packages, use it to allow
# users add more packages to the base rootfs
@@ -53,7 +80,7 @@ build_rootfs()
check_root
if [ ! -f "${DNF_CONF}" ]; then
DNF_CONF="./kata-fedora-dnf.conf"
DNF_CONF="./kata-${OS_NAME}-dnf.conf"
generate_dnf_config
fi
mkdir -p "${ROOTFS_DIR}"
@@ -70,14 +97,5 @@ build_rootfs()
DNF="${PKG_MANAGER} --config=$DNF_CONF -y --installroot=${ROOTFS_DIR} --noplugins"
$DNF install ${EXTRA_PKGS} ${PACKAGES}
[ -n "${ROOTFS_DIR}" ] && rm -r "${ROOTFS_DIR}/var/cache/dnf"
}
check_root()
{
if [ "$(id -u)" != "0" ]; then
echo "Root is needed"
exit 1
fi
[ -n "${ROOTFS_DIR}" ] && rm -r "${ROOTFS_DIR}${CACHE_DIR}"
}