很多时候，部署运行环境的用户和实际运行的用户是不同的， 当因为环境限制，当时碰到以下场景的时候，就比较麻烦了，需要编写一个脚本来实现运行。 1. 不能使用 su 和 sudo 时 2. 用户没有 shell 不支持 login 时，比如 nobody，服务用户 3. 使用 Docker 等容器时 4. 使用 SSH 远程执行命令，但是不能使用登陆用户
实现前提 1. 需要运行用户的用户名和用户分组以及密码 2. 需要运行用户的 PUID 和 PGID
使用前请修改代码中实际运行的用户名，且用户存在
./run-as-user.sh 命令 命令参数
#!/bin/sh
##############################################################################
If a PUID/PGID enviroment variable exists, use those values for the `uid`#
and `gid` when executing scripts, otherwise change the dev user's uid and#
gid to match the user that owns the project directory and run a command as#
that user. If a ~/.ssh directory exists and it's not owned by root then#
switch and run as that user instead in order to take advantage of public key#
authentication.#
##############################################################################
stat_dir="/app"
if [ -d "/home/dev/.ssh" ] && [ "0" != "$(stat -c '%g' /home/dev/.ssh)" ] && [ "0" != "$(stat -c '%u' /home/dev/.ssh)" ]; then
stat_dir="/home/dev/.ssh"
fi
if the PUID environment variable exists, assume that is the preferred user id,#
otherwise use the $stat_dir#
if [ "" != "$PUID" ]; then
uid=$PUID
else
uid=$(stat -c '%u' $stat_dir)
fi
if the PGID environment variable exists, assume that is the preferred group id,#
otherwise use the $stat_dir#
if [ "" != "$PGID" ]; then
gid=$PGID
else
gid=$(stat -c '%g' $stat_dir)
fi
Ensure the correct user id is available in the sudoers file (if the#
specified UID already existed in the image)#
id -nu $uid > /dev/null 2>&1
if [ 0 -eq $? ]; then
echo "$(id -nu $uid) ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers
fi
update the dev user with the specified UID/GID values#
groupmod -g $gid -o dev > /dev/null 2>&1
usermod -u $uid -o dev > /dev/null 2>&1
chown -R dev ~dev/ > /dev/null 2>&1
prevent circular calls to this script (legacy support)#
cmd="$@"
cmda=`expr "x$cmd" : "x.\{0\}\(.\{0,12\}\)"`
cmdb=`expr "x$cmd" : "x.\{1\}\(.\{1,12\}\)"`
while [ "/run-as-user" = "${cmda}" ] || [ "/run-as-user" = "${cmdb}" ]; do
shift
cmd="$@"
done
sudo -u dev $@