code: def _build_user_environment(self, envs, inputs, outputs, mounts):
      
      envs = {env.name: env.value for env in envs}
      envs.update(providers_util.get_file_environment_variables(inputs))
      envs.update(providers_util.get_file_environment_variables(outputs))
      envs.update(providers_util.get_file_environment_variables(mounts))
      return envs
docs: Returns a dictionary of for the user container environment.