容器启动脚本 在容器中挂载外部的应用并在容器启动的时候启动，参数传递使用环境变量 #bash #docker

docker_start.sh

nvidia-docker run -d --rm \
        -e TZ=Asia/Shanghai  \
		-e AILAB_EXEC_SCRIPT="/etc/ailab-init/startup-vnc.sh#"  \
		-e USER_NAME=test \
		-e LANG=zh_CN.UTF-8  \
		-e RESOLUTION=1024x768x16  \
		-v `pwd`/ailab-init:/etc/ailab-init \
		--entrypoint bash \		
		-p 46080:8282 -p 45901:5900 \
		-e  VNC_PASSWORD=111111 \
		test:v0.4  /etc/ailab-init/startup-env.sh

startup-env.sh

#!/bin/bash

debug()
{
	if [ -n "$AILAB_DEBUG" ];then
		echo "$@" >>/tmp/${PROG}.log
	fi
}

add_user()
{
	local opts=""
	[ -n "$USER_HOME" ] && opts="$opts -md $USER_HOME"
	[ -n "$USER_ID" ] && opts="$opts -u $USER_ID"
	[ -n "$USER_SHELL" ] && opts="$opts -s $USER_SHELL"
	[ -n "$GROUP_NAME" ] && opts="$opts -g $GROUP_NAME"

	if ! grep -q $GROUP_NAME /etc/group ;then
		groupadd -g $GROUP_ID $GROUP_NAME
	fi

	debug "add user: $USER_NAME"
	useradd $opts $USER_NAME

	debug "chpasswd: $USER_NAME"
	echo $USER_NAME:$USER_PASSWD|chpasswd

	debug "chpasswd: root"
	echo root:$ROOT_PASSWD|chpasswd
	
	mkdir -p /etc/sudoers.d
	echo "$USER_NAME ALL=(ALL) NOPASSWD: ALL" >/etc/sudoers.d/$USER_NAME
}

clean_up()
{
	unset ROOT_PASSWD
	unset USER_NAME
	unset USER_PASSWD
	unset USER_HOME
	unset USER_ID
	unset USER_SHELL
	unset GROUP_NAME
	unset GROUP_ID
	unset HOME_DIR
}

pre_exec()
{
	add_user
}

exec_cmd()
{
	#AILAB_EXEC_SCRIPT="date#ls -l"
	OLD_IFS=$IFS
	IFS='#' read -r -a exec_array <<< "$AILAB_EXEC_SCRIPT"
	for i in "${exec_array[@]}";do
		debug "execute custom process $i"
		$i &
	done
	IFS=$OLD_IFS
	debug "clean up enviroment variable"
	clean_up
	/usr/sbin/sshd -D
}

main()
{
	pre_exec
	exec_cmd
}

export AILAB_DEBUG="1"
PROG=$(basename $0)
export ROOT_PASSWD=${ROOT_PASSWD:-"p@ssw0rd"}
export USER_NAME=${USER_NAME:-"ailab"}
export USER_PASSWD=${USER_PASSWD:-"ailab"}
export HOME_DIR=${HOME_DIR:-"/home"}
export USER_HOME=${HOME_DIR}/$USER_NAME
export USER_ID=${USER_ID:-"1000"}
export USER_SHELL=${USER_SHELL:-"/bin/bash"}
export GROUP_NAME=${GROUP_NAME:-"student"}
export GROUP_ID=${GROUP_ID:-"1000"}

main "$@"