# About this docker-compose

The `docker-compose` can be used for production purpose.

It is composed of:

1. One full node per supported cryptocurrency (bitcoind/litecoind)
2. A lightweight block explorer ([NBxplorer](https://github.com/dgarage/NBXplorer))
3. A [BTCPay Server](https://github.com/btcpayserver/btcpayserver)
4. A database (Postgres)
5. A reverse proxy (NGINX)
6. Two containers configuring NGINX as a reverse proxy and renewing SSL certificates.

![Architecture](Production.png)

[The Deploy on Azure Button](https://github.com/btcpayserver/btcpayserver-azure) 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.