docs: add docker-compose.yaml with sample configuration

docker-compose.yaml

@@ -0,0 +1,17 @@
+version: "3"
+services:
+  sofarr:
+    image: docker.i3omb.com/sofarr:latest
+    container_name: sofarr
+    restart: unless-stopped
+    ports:
+      - "3001:3001"
+    environment:
+      - PORT=3001
+      - EMBY_URL=https://emby.example.com
+      - EMBY_API_KEY=your-emby-api-key
+      - SONARR_INSTANCES=[{"name":"main","url":"https://sonarr.example.com","apiKey":"your-sonarr-api-key"}]
+      - RADARR_INSTANCES=[{"name":"main","url":"https://radarr.example.com","apiKey":"your-radarr-api-key"}]
+      - SABNZBD_INSTANCES=[{"name":"main","url":"https://sabnzbd.example.com","apiKey":"your-sabnzbd-api-key"}]
+      - QBITTORRENT_INSTANCES=[{"name":"main","url":"https://qbittorrent.example.com","username":"admin","password":"your-password"}]
+      - LOG_LEVEL=info