You can use this docker container to create a SSH tunnel to a remote machine and have it "visible" inside your docker environment.
## Usage example
With the following settings, you have a container that establishes an SSH session with the specified remote machine, forwards remote mysql port to a port on the local container itself which is then exported by the local docker.
That way you can connect to a remote mysql server (even if not directly exposed) as if it is running on your machine.