Preserve host destinations and zstd options

README.md

@@ -68,6 +68,7 @@ Copy `.env.example` to `.env`; `.env` is ignored by Git. Important values:
 | `CONTAINERS_FILE` | Absolute path, or path relative to this repository |
 | `BACKUP_HOSTNAME` | Host folder/name embedded in archive filenames |
 | `BACKUP_METHODS` | Ordered method names, default `rclone smb` |
+| `ZSTD_EXTRA_OPTS` | Options passed to `zstd`, default `-T0 -12` |
 | `KEEP_COUNT` | Local archives retained per Compose project |
 | `PULL_IMAGES` | Pull images before restarting (`1` or `0`) |
 
@@ -79,7 +80,9 @@ RCLONE_REMOTE="gdrive:dockerbackups"
 ```
 
 Archives are copied beneath `<remote>/<BACKUP_HOSTNAME>/`. The method uses
-`rclone copy`, so it does not delete older destination files.
+`rclone copy`, so it does not delete older destination files. Set
+`RCLONE_HOST_SUBDIR=0` when `RCLONE_REMOTE` already names the final host-specific
+destination; otherwise the host name is appended automatically.
 
 ### SMB