Add Docker/systemd deployment, documentation, extauth logout URL wiring

docker-compose.yml

@@ -0,0 +1,18 @@
+services:
+  vibesonic:
+    build: .
+    image: vibesonic:latest
+    container_name: vibesonic
+    restart: unless-stopped
+    ports:
+      - "8080:8080"
+    volumes:
+      - vibesonic-data:/data
+      - /path/to/your/music:/music:ro
+    environment:
+      VIBESONIC_SESSION_SECRET: "change-me-to-a-random-string"
+      # VIBESONIC_SCAN_INTERVAL: 1h
+      # VIBESONIC_EXTAUTH_ENABLED: "false"
+
+volumes:
+  vibesonic-data: