在 Linux 系统（ubuntu/kylin）上安装 Docker

在 Linux 系统上安装 Docker 的步骤如下（以 Ubuntu/Debian 和 CentOS/RHEL 为例）：
请用./check-config config检查内核是否支持，necessarily 必须全部enable。
以下是脚本自行复制运行：

#!/usr/bin/env sh
set -e

EXITCODE=0

# bits of this were adapted from lxc-checkconfig
# see also https://github.com/lxc/lxc/blob/lxc-1.0.2/src/lxc/lxc-checkconfig.in

possibleConfigs="
	/proc/config.gz
	/boot/config-$(uname -r)
	/usr/src/linux-$(uname -r)/.config
	/usr/src/linux/.config
"

if [ $# -gt 0 ]; then
	CONFIG="$1"
else
	: "${CONFIG:=/proc/config.gz}"
fi

if ! command -v zgrep > /dev/null 2>&1; then
	zgrep() {
   
		zcat "$2" | grep "$1"
	}
fi

kernelVersion="$(uname -r)"
kernelMajor="${kernelVersion%%.*}"
kernelMinor="${kernelVersion#$kernelMajor.}"
kernelMinor="${kernelMinor%%.*}"

is_set() {
   
	zgrep "CONFIG_$1=[y|m]" "$CONFIG" > /dev/null
}
is_set_in_kernel() {
   
	zgrep "CONFIG_$1=y" "$CONFIG" > /dev/null
}
is_set_as_module() {
   
	zgrep "CONFIG_$1=m" "$CONFIG" > /dev/null
}

color() {
   
	codes=
	if [ "$1" = 'bold' ]; then
		codes='1'
		shift
	fi
	if [ "$#" -gt 0 ]; then
		code=
		case "$1" in
			# see https://en.wikipedia.org/wiki/ANSI_escape_code#Colors
			black) code=30 ;;
			red) code=31 ;;
			green) code=32 ;;
			yellow) code=33 ;;
			blue) code=34 ;;
			magenta) code=35 ;;
			cyan) code=36 ;;
			white) code=37 ;;
		esac
		if [ "$code" ]; then
			codes="${codes:+$codes;}$code"
		fi
	fi
	printf '\033[%sm' "$codes"
}
wrap_color() {
   
	text="$1"
	shift
	color "$@"
	printf '%s' "$text"
	color reset
	echo
}

wrap_good() {
   
	echo "$(wrap_color "$1" white): $(wrap_color "$2" green)"
}
wrap_bad() {
   
	echo "$(