docs: def build_values(name, values_mods):
      """Update name/values.yaml with modifications"""
      values_file = os.path.join(name, 'values.yaml')
  
      with open(values_file) as f:
          values = yaml.load(f)
  
      for key, value in values_mods.items():
          parts = key.split('.')
          mod_obj = values
          for p in parts:
              mod_obj = mod_obj[p]
          print(f"Updating {values_file}: {key}: {value}")
  
          if isinstance(mod_obj, MutableMapping):
              keys = IMAGE_REPOSITORY_KEYS & mod_obj.keys()
              if keys:
                  for key in keys:
                      mod_obj[key] = value['repository']
              else:
                  possible_keys = ' or '.join(IMAGE_REPOSITORY_KEYS)
                  raise KeyError(
                      f'Could not find {possible_keys} in {values_file}:{key}'
                  )
  
              mod_obj['tag'] = value['tag']
          else:
              raise TypeError(
                  f'The key {key} in {values_file} must be a mapping.'
              )
  
  
      with open(values_file, 'w') as f:
          yaml.dump(values, f)