FIX: Unbuffer upgrader output using Open3.popen2e
FIX: Unbuffer upgrader output using Open3.popen2e

Qasem-h/docker_manager,Qasem-h/docker_manager,discourse/docker_manager,discourse/docker_manager,discourse/docker_manager,Qasem-h/docker_manager,Qasem-h/docker_manager,discourse/docker_manager