Run caddy server as unprivileged user, includes Hugo option

unprivileged_caddy.sh

#!/bin/bash
# *As root*

cd ~
killall caddy
rm -rf ~/caddy
mkdir caddy && cd caddy
curl -SL 'https://caddyserver.com/download/build?os=linux&arch=amd64&features=hugo' > caddy.tgz
tar xzf caddy.tgz 

ulimit -n 4096
userdel -rf caddy 
useradd -m -s /sbin/nologin caddy
chown root:root ./caddy
chmod 755 ./caddy

rm -f /usr/local/bin/caddy
cp -p ./caddy /usr/local/bin/caddy

# Must be reapplied if this file is moved or altered (you're welcome)
setcap cap_net_bind_service=+ep /usr/local/bin/caddy

ls -lh /usr/local/bin

# Note admin login is: hugoadmin/retoast-teamwork

echo -e "localdev:80\nroot /home/caddy\nbasicauth /admin hugoadmin retoast-teamwork\nhugo" > /home/caddy/Caddyfile
echo 'Hello world' > /home/caddy/index.html
chown caddy:caddy /home/caddy/*

rm -f /root/caddy/caddy.log

# To run in foreground
# cd /home/caddy && sudo -u caddy /usr/local/bin/caddy |& tee -a /root/caddy/caddy.log

# To run in background:
( cd /home/caddy && sudo -u caddy /usr/local/bin/caddy > /root/caddy/caddy.log 2>&1 & )

sleep 3 
ps -ef | grep caddy | grep -v grep