linters

In order to submit this project for some of the curated go projects, we'll need to ensure a decent code coverage report. Currently, we don't have one since our integration tests are setup in a way that they test the application as a blackbox, which prevents us from having code coverage.

I'll welcome any PR which adds a new unit test & increases the code coverage.

followup from #149

It will be great to have a docker image that one can run locally or in CI instead of needing to install/download a binary.

	// makeExample replaces all ${linter} placeholders to a bound linter name.

The code below does not use ${linter} anywhere.
I could remove this, but would also like to avoid doing several unrelated things on the same PR, so keeping it as an issue to avoid forgetting about it.