This could be done for development needs or as a routing or shop front end that you'd prefer to up and running 24x7.
We're going to take advantage of the Oracle Cloud Free Tier - which provides two free linux VMs (free forever is the )
Open a screen incase you get disconnected which will make it easier to retutrn to your session screen -S btcpay. (I had this first time trying to install... bit annoying.)
If you need to leave this session you can detach with Ctrl+a and if you get kicked out of the ssh session you can reattch with screen -r btcpay, more details here.
Once you're in switch to root sudo SU.
Then copy and paste in the following block (assuming you want mainnet BTC, plus LND).
export BTCPAY_HOST="btcpay.winn.cloud"
export NBITCOIN_NETWORK="mainnet"
export BTCPAYGEN_CRYPTO1="btc"
export BTCPAYGEN_REVERSEPROXY="nginx"
export BTCPAYGEN_LIGHTNING="lnd"
export BTCPAY_ENABLE_SSH=true
. ./btcpay-setup.sh -i