Add DNS defaults to arr stack

infra/arr-stack/.env.example

@@ -2,6 +2,8 @@ ARR_ROOT=/data/arr
 PUID=1000
 PGID=1000
 TZ=America/Mexico_City
+ARR_DNS_PRIMARY=1.1.1.1
+ARR_DNS_SECONDARY=8.8.8.8
 
 PROWLARR_PORT=9696
 RADARR_PORT=7878

infra/arr-stack/README.md

@@ -17,6 +17,10 @@ Services:
 
 Persistent storage defaults to `/data/arr`.
 
+Containers use explicit DNS servers from `.env` through `ARR_DNS_PRIMARY` and
+`ARR_DNS_SECONDARY`. Defaults are `1.1.1.1` and `8.8.8.8`; set them to your
+router, Pi-hole, or Tailscale DNS addresses if needed.
+
 ## Start
 
 ```bash

infra/arr-stack/docker-compose.yml

@@ -2,6 +2,9 @@ name: homelab-arr
 
 x-linuxserver-common: &linuxserver-common
   restart: unless-stopped
+  dns: &arr-dns
+    - ${ARR_DNS_PRIMARY:-1.1.1.1}
+    - ${ARR_DNS_SECONDARY:-8.8.8.8}
   environment:
     PUID: ${PUID:-1000}
     PGID: ${PGID:-1000}
@@ -14,6 +17,7 @@ services:
     image: ${FLARESOLVERR_IMAGE:-ghcr.io/flaresolverr/flaresolverr:latest}
     container_name: ${FLARESOLVERR_CONTAINER_NAME:-arr-flaresolverr}
     restart: unless-stopped
+    dns: *arr-dns
     environment:
       LOG_LEVEL: ${FLARESOLVERR_LOG_LEVEL:-info}
       TZ: ${TZ:-America/Mexico_City}
@@ -73,6 +77,7 @@ services:
     image: ${KAPOWARR_IMAGE:-mrcas/kapowarr:latest}
     container_name: ${KAPOWARR_CONTAINER_NAME:-arr-kapowarr}
     restart: unless-stopped
+    dns: *arr-dns
     environment:
       PUID: ${PUID:-1000}
       PGID: ${PGID:-1000}
@@ -90,6 +95,7 @@ services:
     image: ${SUWAYOMI_IMAGE:-ghcr.io/suwayomi/suwayomi-server:preview}
     container_name: ${SUWAYOMI_CONTAINER_NAME:-arr-suwayomi}
     restart: unless-stopped
+    dns: *arr-dns
     environment:
       PUID: ${PUID:-1000}
       PGID: ${PGID:-1000}
@@ -106,6 +112,7 @@ services:
     image: ${MAINTAINERR_IMAGE:-ghcr.io/jorenn92/maintainerr:latest}
     container_name: ${MAINTAINERR_CONTAINER_NAME:-arr-maintainerr}
     restart: unless-stopped
+    dns: *arr-dns
     environment:
       PUID: ${PUID:-1000}
       PGID: ${PGID:-1000}