17:32:07[2019-09-27T17:32:07.937Z] + docker run --rm -v /home/ubuntu/workspace/engine_PR-387:/workspace alpine sh -c apk add --no-cache -q git bash && cd /workspace && hack/validate/dco
17:32:14[2019-09-27T17:32:14.501Z] Congratulations! All commits are properly signed with the DCO!