Edge device features

I just deployed the edge agent successfully.
Does the docker instance have web GUI with dashboard too?

No, the edge agent can only run edge workflows that you deploy down to it from the Losant web interface. If you want to display data from a device with the edge agent running on it within a Losant dashboard, you can use the Device State Node in your edge workflow to report state for the device, and those state reports will get sent up to the Losant platform as soon as the device has an internet connection.