Fix pihole dashboard access

btcpay-setup.sh

@@ -204,6 +204,7 @@ fi
 : "${REVERSEPROXY_HTTP_PORT:=80}"
 : "${REVERSEPROXY_HTTPS_PORT:=443}"
 : "${BTCPAY_ENABLE_SSH:=false}"
+: "${PIHOLE_SERVERIP:=}"
 : "${CLOUDFLARE_TUNNEL_TOKEN:=}"
 
 OLD_BTCPAY_DOCKER_COMPOSE="$BTCPAY_DOCKER_COMPOSE"
@@ -313,6 +314,7 @@ BTCPAY_IMAGE:$BTCPAY_IMAGE
 ACME_CA_URI:$ACME_CA_URI
 TOR_RELAY_NICKNAME: $TOR_RELAY_NICKNAME
 TOR_RELAY_EMAIL: $TOR_RELAY_EMAIL
+PIHOLE_SERVERIP: $PIHOLE_SERVERIP
 FIREFLY_HOST: $FIREFLY_HOST
 ----------------------
 Additional exported variables:
@@ -364,6 +366,7 @@ export BTCPAY_BASE_DIRECTORY=\"$BTCPAY_BASE_DIRECTORY\"
 export BTCPAY_ENV_FILE=\"$BTCPAY_ENV_FILE\"
 export BTCPAY_HOST_SSHKEYFILE=\"$BTCPAY_HOST_SSHKEYFILE\"
 export BTCPAY_ENABLE_SSH=$BTCPAY_ENABLE_SSH
+export PIHOLE_SERVERIP=\"$PIHOLE_SERVERIP\"
 if cat \"\$BTCPAY_ENV_FILE\" &> /dev/null; then
   while IFS= read -r line; do
     ! [[ \"\$line\" == \"#\"* ]] && [[ \"\$line\" == *\"=\"* ]] && export \"\$line\"

docker-compose-generator/docker-fragments/opt-add-pihole.yml

@@ -5,6 +5,7 @@ services:
         container_name: pihole
         image: pihole/pihole:2025.03.0
         environment:
+            FTLCONF_dns_reply_host_IPv4: "${PIHOLE_SERVERIP:-127.0.0.1}"
             VIRTUAL_HOST: pi.hole
             VIRTUAL_HOST_NAME: "pihole"
             FTLCONF_dns_listeningMode: 'all'

docs/pihole.md

@@ -26,6 +26,12 @@ From now everytime a device will connect to your local network, they will automa
 ## Using the dashboard
 
 Pi-Hole comes with a very nice admin dashboard to monitor its activity.
+It is disabled by default. To enable it, you need to configure `PIHOLE_SERVERIP` to the IP of your server:
+
+```bash
+PIHOLE_SERVERIP="192.168.1.2"
+. btcpay-setup.sh -i
+```
 
 If your device is using pi-hole as a DNS server, you should now be able to browse `http://pi.hole/admin` to connect to your dashboard.