Add rclone mount doc

doc/book/src/connect/fs.md

@@ -11,6 +11,44 @@ Ideally, avoid these solutions at all for any serious or production use.
 
 ## rclone mount
 
+rclone uses the same configuration when used [in CLI](/connect/cli.html) and mount mode.
+We suppose you have the following entry in your `rclone.ini` (mine is located in `~/.config/rclone/rclone.conf`):
+
+```toml
+[garage]
+type = s3
+provider = Other
+env_auth = false
+access_key_id = <access key>
+secret_access_key = <secret key>
+region = <region>
+endpoint = <endpoint>
+force_path_style = true
+acl = private
+bucket_acl = private
+```
+
+Then you can mount and access any bucket as follow:
+
+```bash
+# mount the bucket
+mkdir /tmp/my-bucket
+rclone mount --daemon garage:my-bucket /tmp/my-bucket
+
+# set your working directory to the bucket
+cd /tmp/my-bucket
+
+# create a file
+echo hello world > hello.txt
+
+# access the file
+cat hello.txt
+
+# unmount the bucket
+cd
+fusermount -u /tmp/my-bucket
+```
+
 *External link:* [rclone documentation > rclone mount](https://rclone.org/commands/rclone_mount/)
 
 ## s3fs