fix: add Tailscale DNS to GPU proxy containers

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

ai/compose.yaml

@@ -96,6 +96,9 @@ services:
     image: ghcr.io/berriai/litellm:main-latest
     container_name: ${AI_COMPOSE_PROJECT_NAME}_litellm
     restart: unless-stopped
+    dns:
+      - 100.100.100.100
+      - 8.8.8.8
     environment:
       TZ: ${TIMEZONE:-Europe/Berlin}
       ANTHROPIC_API_KEY: ${ANTHROPIC_API_KEY}
@@ -185,6 +188,9 @@ services:
     image: nginx:alpine
     container_name: ${AI_COMPOSE_PROJECT_NAME}_comfyui
     restart: unless-stopped
+    dns:
+      - 100.100.100.100
+      - 8.8.8.8
     environment:
       TZ: ${TIMEZONE:-Europe/Berlin}
       GPU_SERVICE_HOST: ${GPU_TAILSCALE_HOST:-runpod-ai-orchestrator}
@@ -217,6 +223,9 @@ services:
     image: nginx:alpine
     container_name: ${AI_COMPOSE_PROJECT_NAME}_audiocraft
     restart: unless-stopped
+    dns:
+      - 100.100.100.100
+      - 8.8.8.8
     environment:
       TZ: ${TIMEZONE:-Europe/Berlin}
       GPU_SERVICE_HOST: ${GPU_TAILSCALE_HOST:-runpod-ai-orchestrator}
@@ -249,6 +258,9 @@ services:
     image: nginx:alpine
     container_name: ${AI_COMPOSE_PROJECT_NAME}_upscale
     restart: unless-stopped
+    dns:
+      - 100.100.100.100
+      - 8.8.8.8
     environment:
       TZ: ${TIMEZONE:-Europe/Berlin}
       GPU_SERVICE_HOST: ${GPU_TAILSCALE_HOST:-runpod-ai-orchestrator}
@@ -282,6 +294,9 @@ services:
     image: dev.pivoine.art/valknar/supervisor-ui:latest
     container_name: ${AI_COMPOSE_PROJECT_NAME}_supervisor_ui
     restart: unless-stopped
+    dns:
+      - 100.100.100.100
+      - 8.8.8.8
     environment:
       TZ: ${TIMEZONE:-Europe/Berlin}
       NODE_ENV: production