Re-enable Watchtower with correct Docker API version

Fixes:
- docker-compose/infrastructure.yml:
  - Uncommented Watchtower service
  - Updated image from 1.7.1 to latest
  - Changed DOCKER_API_VERSION from 1.44 to 1.52 (current Docker version)
  - Added default empty value for WATCHTOWER_NOTIFICATION_URL

- scripts/deploy-homelab.sh:
  - Removed "temporarily disabled" note
  - Added Watchtower to infrastructure stack list

- docs/services-overview.md:
  - Updated infrastructure stack count from 7 to 8
  - Added Watchtower to service list

Watchtower now runs successfully with scheduled updates at 4 AM daily

docker-compose/infrastructure.yml

@@ -74,24 +74,27 @@ services:
   # Issue tracked for resolution in future release
   # To enable: Uncomment service below and run: docker compose up -d watchtower
   # 
-  # watchtower:
-  #   image: containrrr/watchtower:1.7.1
-  #   container_name: watchtower
-  #   restart: unless-stopped
-  #   networks:
-  #     - homelab-network
-  #   volumes:
-  #     - /var/run/docker.sock:/var/run/docker.sock
-  #   environment:
-  #     - DOCKER_API_VERSION=1.44
-  #     - WATCHTOWER_CLEANUP=true
-  #     - WATCHTOWER_INCLUDE_RESTARTING=true
-  #     - WATCHTOWER_SCHEDULE=0 0 4 * * *  # 4 AM daily
-  #     - WATCHTOWER_NOTIFICATIONS=shoutrrr
-  #     - WATCHTOWER_NOTIFICATION_URL=${WATCHTOWER_NOTIFICATION_URL}
-  #   labels:
-  #     - "homelab.category=infrastructure"
-  #     - "homelab.description=Automatic Docker container updates"
+  # Watchtower - Automatic container updates
+  # Monitors and updates Docker containers to latest versions
+  # Runs daily at 4 AM
+  watchtower:
+    image: containrrr/watchtower:latest
+    container_name: watchtower
+    restart: unless-stopped
+    networks:
+      - homelab-network
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock
+    environment:
+      - DOCKER_API_VERSION=1.52
+      - WATCHTOWER_CLEANUP=true
+      - WATCHTOWER_INCLUDE_RESTARTING=true
+      - WATCHTOWER_SCHEDULE=0 0 4 * * *  # 4 AM daily
+      - WATCHTOWER_NOTIFICATIONS=shoutrrr
+      - WATCHTOWER_NOTIFICATION_URL=${WATCHTOWER_NOTIFICATION_URL:-}
+    labels:
+      - "homelab.category=infrastructure"
+      - "homelab.description=Automatic Docker container updates"
 
   # Dozzle - Real-time Docker log viewer
   # Access at: https://dozzle.${DOMAIN}

docs/services-overview.md

@@ -11,11 +11,12 @@ This document provides a comprehensive overview of all 60+ pre-configured servic
 | ├─ [Traefik](service-docs/traefik.md) | Reverse proxy + SSL | ✓ | /opt/stacks/core/traefik | traefik.${DOMAIN} |
 | ├─ [Authelia](service-docs/authelia.md) | SSO authentication | - | /opt/stacks/core/authelia | auth.${DOMAIN} |
 | └─ [Gluetun](service-docs/gluetun.md) | VPN (Surfshark) | - | /opt/stacks/core/gluetun | No UI |
-| **🔧 [infrastructure.yaml](../docker-compose/infrastructure.yml) (7+5)** | **Deployed: 7** | | | |
+| **🔧 [infrastructure.yaml](../docker-compose/infrastructure.yml) (8+5)** | **Deployed: 8** | | | |
 | ├─ [Dockge](service-docs/dockge.md) | Stack manager (PRIMARY) | ✓ | /opt/stacks/infrastructure | dockge.${DOMAIN} |
 | ├─ [Pi-hole](service-docs/pihole.md) | DNS + Ad blocking | ✓ | /opt/stacks/infrastructure | pihole.${DOMAIN} |
 | ├─ [Dozzle](service-docs/dozzle.md) | Docker log viewer | ✓ | /opt/stacks/infrastructure | dozzle.${DOMAIN} |
 | ├─ [Glances](service-docs/glances.md) | System monitoring | ✓ | /opt/stacks/infrastructure | glances.${DOMAIN} |
+| ├─ Watchtower | Auto container updates | - | /opt/stacks/infrastructure | No UI |
 | ├─ Code Server | VS Code in browser | ✓ | /opt/stacks/infrastructure | code.${DOMAIN} |
 | └─ [Docker Proxy](service-docs/docker-proxy.md) | Secure socket access | - | /opt/stacks/infrastructure | No UI |
 | **📦 [alternatives.yaml](../docker-compose/alternatives.yml) (6)** | **Not deployed** | | | |

scripts/deploy-homelab.sh

@@ -337,7 +337,7 @@ log_info "  - Pi-hole (DNS Ad Blocker)"
 log_info "  - Dozzle (Log Viewer)"
 log_info "  - Glances (System Monitor)"
 log_info "  - Docker Proxy (Security)"
-log_info "  Note: Watchtower temporarily disabled (Docker API compatibility)"
+log_info "  - Watchtower (Automatic Updates)"
 echo ""
 
 # Copy infrastructure stack