add docker config

docker-compose.yml

@@ -0,0 +1,23 @@
+services:
+  app:
+    build: .
+    ports:
+      - 3000:3000
+    environment:
+      PORT: 3000
+      NODE_ENV: production
+    volumes:
+      # Runtime data — must map to /app/ since process.cwd() = /app in the container
+      - ./medialore.db:/app/medialore.db
+      - ./.thumbnails:/app/.thumbnails
+      # Library config — mounted as a directory so the atomic rename in the API works.
+      # A single-file bind-mount causes EBUSY on rename() because .tmp and the target
+      # end up on different devices. Initialize before first run:
+      #   mkdir -p config && echo '[]' > config/libraries.json
+      - ./config:/config
+
+      # Mount your media folders and reference them in libraries.json using
+      # absolute /data/ paths, e.g. { "path": "/data/Games" }
+      - ./data:/data:ro
+      # - /path/to/your/movies:/data/Movies:ro
+    restart: unless-stopped