fix typo
@ -208,7 +208,7 @@ Look at the `docker-compose.yml` file to see how to use it.
### Set private key
Private key is settable by environment or by copying file in `hostname/private_key` in docket volume (`hostname` is the link name).
Private key is settable by environment or by copying file in `hostname/private_key` in docker volume (`hostname` is the link name).
It's easier to pass key in environment with `docker-compose`.