Make sure repo override in envvar makes it into config (#15782)

* Make sure repo override in envvar makes it into config

* Explain what happens with the "here" flag

ddev/CHANGELOG.md

@@ -6,6 +6,10 @@
 
 * Add color output to tests in CI ([#15774](https://github.com/DataDog/integrations-core/pull/15774))
 
+***Fixed***:
+
+* Make sure repo override in envvar makes it into config ([#15782](https://github.com/DataDog/integrations-core/pull/15782))
+
 ## 5.0.0 / 2023-09-06
 
 ***Removed***:

ddev/src/ddev/cli/application.py

@@ -87,8 +87,13 @@ def initialize_old_cli(self):
         self.__config['color'] = not self.console.no_color
         self.__config['dd_api_key'] = self.config.orgs.get('default', {}).get('api_key', '')
         self.__config['dd_app_key'] = self.config.orgs.get('default', {}).get('app_key', '')
-
-        kwargs = {'here' if self.repo.name == 'local' else self.repo.name: True}
+        # Make sure that envvar overrides of repo make it into config.
+        self.__config['repo'] = self.repo.name
+        # Transfer the -x/--here flag to the old CLI.
+        # In the new CLI that flag turns into a repo named "local" but the old CLI expects a bool kwarg "here".
+        kwargs = {}
+        if self.repo.name == 'local':
+            kwargs['here'] = True
         initialize_root(self.__config, **kwargs)
 
     def copy(self):