Hello,
I installed V2 via the following command line; (As per instructions on the caddy website);
"https://caddyserver.com/docs/download"
echo "deb [trusted=yes] https://apt.fury.io/caddy/ /" \ | sudo tee -a /etc/apt/sources.list.d/caddy-fury.list
sudo apt update
sudo apt install caddy
It was all automatic so I never required to place the executable anywhere. This is the output of;
"which caddy";
/usr/local/bin/caddy
Thank you.