About this docker-compose

The docker-compose can be used for production purpose.

It is composed of:

One full node per supported cryptocurrency (bitcoind/litecoind)
A lightweight block explorer (NBxplorer)
A BTCPay Server
A database (Postgres)
A reverse proxy (NGINX)
Two containers configuring NGINX as a reverse proxy and renewing SSL certificates.

The Deploy on Azure Button is using this docker-compose under the hood on an Ubuntu machine. You can use it on any docker supporting host.

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 the NGINX server from internet. This domain name must point to this machine for Let's Encrypt to create your certificate. (typically with a CNAME or A record)
LETSENCRYPT_EMAIL: The email Let's Encrypt will use to notify you about certificate expiration.
ACME_CA_URI: Let's encrypt API endpoint (https://acme-staging.api.letsencrypt.org/directory for a staging certificate, https://acme-v01.api.letsencrypt.org/directory for a production one)

Use docker-compose.btc-ltc.yml for bitcoin and litecoin support, or docker-compose.btc.yml for only bitcoin.

Any unset or empty environment variable will be set for a regtest deployment.