* kanikoExecute: improve user experience
* ensure proper tags
* update permissions
in case a container runs with a different user
we need to make sure that the orchestrator user
can work on the file
* update permissions
* ensure availablility of directories on Jenkins
* (fix) clean up tmp dir in test
* add resilience for incorrect step yaml
* incorporate PR feedback
* piperExecuteBin - prevent non-speaking exit code 1 error
Make sure that error during context resolution gets more context.
* properly provide golang errors
* improve error message, when no details are available
* Add error category
* Update getConfig.go
* Remove redundancy: no duplicate stepName
Up to now: provided explicity via command line argument and also contained in the
step metadata (which are as a file also provided as command line argument).
Now it is retrieved from the metadata file.
* Step name is not a required parameter anymore
Since the step name is derived from the config file
* Adjust method signature in test
