* Added ability to run Dockerfile.SUFFIX ContainerAction
* Extracted IsDockerFile method
* reformatted, moved from index to Last()
* extracted IsDockerfile to DockerUtil with L0
* added check for IsDockerfile to account for docker://
* updated test to clearly show path/dockerfile:tag
* fail if Data.Image is not Dockerfile or docker://[image]
* Log in with container credentials if given
* Stub in registry aware auth for later
* Fix hang if password is empty
* Remove default param to fix build
* PR Feedback. Add some tests and fix parse
The build warnings were of these type (mostly reported by xUnit's Code Analyzers):
- Fixed wrong parameter order in xUnit assertions (can lead to poor error reporting in test failures)
- Unused code was removed
- Correct assertions were used (e.g. Assert.True/.Contains/.EndsWith)
- Public non-test methods on test classes were made private
