Install sing-box on Ubuntu Server

Install go

sudo snap install --classic go

git clone -b main https://github.com/SagerNet/sing-box
cd sing-box
./release/local/install.sh

Edit configuration file in /usr/local/etc/sing-box/config.json

./release/local/enable.sh

Update

./release/local/update.sh

References
https://sing-box.sagernet.org/examples/linux-server-installation/
https://snapcraft.io/go