This is the same architecture as Production but without NGINX as a reverse proxy. It is suited for environment which already expose the host behind a reverse proxy.

The relevant environment variables are:

NBITCOIN_NETWORK: the blockchain identifier used by NBitcoin (eg., regtest, testnet, mainnet)
BTCPAY_HOST: the external url used to access your server from internet. This domain name must point to this machine.

The port 80 is exposed.

** Note that in order to successfully use the BTCPay API, you must still access to it from an HTTPS url https://BTCPAY_HOST/. **