* 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
This PR changes GITHUB_ACTION to use the step ContextName, instead of refname. The behavior is behind a feature flag. Refname is an otherwise deprecated property.
Primary motivation: For composite actions, we need a distinct GITHUB_ACTION for each nested step. This PR adds code to generate a default context name for nested steps.
For nested steps, GITHUB_ACTION will be set to "{ScopeName}.{ContextName}" to ensure no collisions.
A corresponding change will be made on the server so context name is never empty. Generated context names will start with "__".
A follow-up PR is required to avoid tracking "step" context values (outputs/conclusion/result) for generated context names. Waiting on telemetry from the server to confirm it's safe to assume leading "__" is a generate context name.
* Composite Action Run Steps
* Clean up trace messages + add Trace debug in ActionManager
* Change String to string
* Add comma to Composite
* Change JobSteps to a List, Change Register Step function name
* Add TODO, remove unn. content
* Remove unnecessary code
* Fix unit tests
* Add verbose trace logs which are only viewable by devs
* Sort usings in Composite Action Handler
* Change 0 to location
* Update context variables in composite action yaml
* Add helpful error message for null steps
