refactoring; delete unneeded [chmod 755 tmp_dir] on host
refactoring; delete unneeded [chmod 755 tmp_dir] on host

cyber-dojo/runner_stateless,cyber-dojo/runner_stateless,cyber-dojo/runner,cyber-dojo/runner_stateless,cyber-dojo/runner,cyber-dojo/runner_stateless,cyber-dojo/runner_stateless,cyber-dojo/runner_stateless,cyber-dojo/runner_stateless