# 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)
* `LIGHTNING_ALIAS`: Optional, if using the integrated lightning feature, customize the alias of your nodes

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.

The necessary open ports are:

1. `80` for Let's encrypt
2. `443` for the website

Example for running on `mainnet`:

For linux:

```
docker-compose up \
    -e "NBITCOIN_NETWORK=mainnet" \
    -e "BTCPAY_HOST=btcpay.example.com" \
    -e "LETSENCRYPT_EMAIL=me@example.com" \
    -e "ACME_CA_URI=https://acme-v01.api.letsencrypt.org/directory"
```

For powershell:

```
docker-compose up `
    -e "NBITCOIN_NETWORK=mainnet" `
    -e "BTCPAY_HOST=btcpay.example.com" `
    -e "LETSENCRYPT_EMAIL=me@example.com" `
    -e "ACME_CA_URI=https://acme-v01.api.letsencrypt.org/directory"
```

Make sure the domain `btcpay.example.com` point to your server and that port `80` and `443` are open.