Add Jellyfin media server Docker configuration

- Docker compose setup with hardware acceleration support
- Network host mode for optimal streaming performance
- Volume mounts for config, cache, and media directories
- Memory limits and resource management
- Device access for GPU hardware transcoding
- Integration with existing media folder structure

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

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

config/docker/jellyfin/docker-compose.yml

@@ -0,0 +1,53 @@
+# DEPLOYMENT LOCATION: /opt/docker/jellyfin/docker-compose.yml
+# Deploy with: sudo mkdir -p /opt/docker/jellyfin && sudo cp config/docker/jellyfin/docker-compose.yml /opt/docker/jellyfin/
+# Start with: cd /opt/docker/jellyfin && sudo docker-compose up -d
+
+version: "3.8"
+
+services:
+  jellyfin:
+    image: jellyfin/jellyfin:latest
+    container_name: jellyfin
+    restart: unless-stopped
+    
+    # User and group IDs to match host user (hoborg)
+    user: 1000:1000
+    
+    # Environment variables
+    environment:
+      - JELLYFIN_PublishedServerUrl=https://ak-homelab.duckdns.org/media
+    
+    # Network mode for better performance and hardware acceleration
+    network_mode: host
+    
+    # Volume mounts - using same folders as Copyparty
+    volumes:
+      # Jellyfin configuration and data
+      - /opt/docker/jellyfin/config:/config
+      - /opt/docker/jellyfin/cache:/cache
+      
+      # Media folders (shared with Copyparty)
+      - /home/hoborg/Music:/media/music:ro
+      - /home/hoborg/Videos:/media/videos:ro
+      - /home/hoborg/shared:/media/shared:ro
+      
+      # Additional media folders if they exist
+      # - /home/hoborg/Movies:/media/movies:ro
+      # - /home/hoborg/TV:/media/tv:ro
+    
+    # Device access for hardware acceleration (Intel/AMD GPU)
+    devices:
+      - /dev/dri:/dev/dri
+    
+    # Memory limits for container stability
+    deploy:
+      resources:
+        limits:
+          memory: 2G
+        reservations:
+          memory: 512M
+
+# Optional: Create a custom network if not using host networking
+# networks:
+#   jellyfin:
+#     driver: bridge