Actually run the clean-docker command instead of echoing it

changed milestone to %Arkindex 1.6.1

added Bug P3 labels

requested review from @erouchet

assigned to @babadie

added 2 commits

• 64a568e1 - 1 commit from branch master
• 05356498 - Actually run the command instead of echoing it

Compare with previous version

enabled an automatic merge when the pipeline for 05356498 succeeds

merged