Add Streamlit Docker auto-sync deployment

example_config.yml

@@ -20,6 +20,16 @@ spotify:
 #   - when false: favorites can only be synced manually via --sync-favorites argument
 sync_favorites_default: true
 
+# unattended Streamlit/Docker sync
+# The daily job syncs playlists marked with "Watch" in the Streamlit app.
+auto_sync:
+  enabled: false
+  daily_at: "03:00"
+  timezone: Europe/Berlin
+  run_on_startup: false
+  sync_external: false
+  sync_favorites: false
+
 # increasing these parameters should increase the search speed, while decreasing reduces likelihood of 429 errors
 max_concurrency: 10 # max concurrent connections at any given time
 rate_limit:      10 # max sustained connections per second