btcpay-setup.sh will use the following environment variables:

• BTCPAY_HOST: The hostname of your website (eg. btcpay.example.com)
• BTCPAY_ADDITIONAL_HOSTS: Optional, specify additional domains to your BTCPayServer with https support if enabled. (eg. example2.com,example3.com)
• REVERSEPROXY_HTTP_PORT: The public port the reverse proxy binds to for HTTP traffic (default: 80)
• REVERSEPROXY_HTTPS_PORT: The public port the reverse proxy binds to for HTTPS traffic (default: 443)
• REVERSEPROXY_DEFAULT_HOST: Optional, if using a reverse proxy nginx, specify which website should be presented if the server is accessed by its IP.
• NBITCOIN_NETWORK: The type of network to use (eg. mainnet, testnet, or regtest. Default: mainnet)
• LIGHTNING_ALIAS: An alias for your lightning network node, if used
• BTCPAYGEN_CRYPTO1: First supported crypto currency (eg. btc, ltc. Default: btc)
• BTCPAYGEN_CRYPTO2: Second supported crypto currency (eg. btc, ltc. Default: (empty))
• BTCPAYGEN_CRYPTON: N'th supported crypto currency where N is 9 at maximum. (eg. btc, ltc. Default: (empty))
• BTCPAYGEN_REVERSEPROXY: Specify reverse proxy to use; NGinx has HTTPS support. (eg. nginx, traefik, (empty). Default: nginx)
• BTCPAYGEN_LIGHTNING: Lightning network implementation to use (eg. clightning, lnd, Default: (empty))
• BTCPAYGEN_SUBNAME: The subname of the generated docker-compose file, where the full name is Generated/docker-compose.SUBNAME.yml (Default: generated)
• BTCPAYGEN_ADDITIONAL_FRAGMENTS: Semicolon-separated list of additional fragments you want to use (eg. opt-save-storage)
• LETSENCRYPT_EMAIL: An email will be sent to this address if certificate expires and fails to renew automatically (eg. me@example.com)
• ACME_CA_URI: The API endpoint to ask for HTTPS certificate (Default: production)
• BTCPAY_ENABLE_SSH: Optional, gives BTCPay Server SSH access to the host by allowing it to edit authorized_keys of the host, it can be used for managing the authorized_keys or updating BTCPay Server directly through the website. (Default: false)
• BTCPAYGEN_DOCKER_IMAGE: Optional, Specify which generator image to use if you have customized the C# generator. Set to btcpayserver/docker-compose-generator:local to build the generator locally at runtime.
• BTCPAY_IMAGE: Optional, Specify which btcpayserver image to use if you have a customized btcpayserver.
• BTCPAYGEN_EXCLUDE_FRAGMENTS: Semicolon-separated list of fragments you want to forcefully exclude (eg. litecoin-clightning)
• TOR_RELAY_NICKNAME: If tor relay is activated with opt-add-tor-relay, the relay nickname
• TOR_RELAY_EMAIL: If tor relay is activated with opt-add-tor-relay, the email for Tor to contact you regarding your relay

Additionally, there are specific environment variables for some addons:

• LIBREPATRON_HOST: If libre patron is activated with opt-add-librepatron the hostname of your libre patron website (eg. librepatron.example.com)
• ZAMMAD_HOST: If zammad is activated with opt-add-zammad , the hostname of your zammad website (eg. zammad.example.com)
• WOOCOMMERCE_HOST: If woocommerce is activated with opt-add-woocommerce , the hostname of your woocommerce website (eg. store.example.com)
• EPS_XPUB: If Electrum Personal Server (EPS) is activated with opt-add-electrum-ps , you must set the Extended Public Key (XPUB, YPUB or ZPUB) of the wallet you want to use, before first run of the EPS server. If you accidently start EPS without this, it will not work properly as the model of EPS is to monitor only specified wallets.
• If Bitcoin Wallet Tracker is activated with opt-add-bwt , you can use BWT_XPUB/BWT_XPUB_* (to set your XPUB/YPUB/ZPUB), BWT_DESCRIPTOR/BWT_DESCRIPTOR_* (for script descriptors), BWT_RESCAN_SINCE (set to the wallet creation date in YYYY-MM-DD to speed up the rescan), BWT_BITCOIND_WALLET and BWT_GAP_LIMIT.
• LND_WTCLIENT_SWEEP_FEE: If LND watchtower is activated with opt-lnd-wtclient , you can use LND_WTCLIENT_SWEEP_FEE to change the sweep fee used in constructing the justice transaction (default is 10 sat/byte)
• FIREFLY_HOST: If fireflyiii is activated with opt-add-fireflyiii , the hostname of your fireflyiii website (eg. firefly.example.com)