This adds a Dockerfile for unbound exporter, which we can publish in the future. An example docker compose.yml is included to demonstrate and test using it with unbound, along with a sample configuration file for unbound showing how to set up the remote-control.
The unbound example config file is based on the one inside the mvance/docker image that's used here.
A small integration test runs against the docker-compose setup to smoke-test unbound_exporter.
Phil Porada
Matthew McPherrin