this was discovered on CBL-Mariner (https://github.com/microsoft/CBL-Mariner), but likely exists everywhere. steps to reproduce are - 1. provision a fresh system 2. git clone container-canary 3. cd container-canary; make  i would expect the test runner to check for docker and check for docker to be running, and provide a clear next steps. note: mariner uses moby, which includes docker porcelain.