fix(config): tighten --config path handling #4465
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Change Summary
What and Why:
The --config flag must now point to an existing file. Tests have been created to reflect this change.
Fixes #4382 and #4378.
Additionally, I noticed an inconsistency in how directory path passed to --config is handled. It seems that
appConfigFilePaths
attempts to process directory parameter. However, in such case, the switch statement would return an error. Since the --config flag is described as "Path to application configuration file," I don't believe directory support is necessary.Documentation