Add new save-storage

docker-compose-generator/docker-fragments/opt-save-storage.yml

@@ -3,4 +3,6 @@ version: "3"
 services:
   bitcoind:
     environment:
+      # If you don't use Lightning Network, use opt-save-store-xxs instead
+      # This save about 1 years of block, your lightning node won't be able to see channel created 1 year since the time you start it.
       BITCOIN_EXTRA_ARGS: prune=100000