11:13:12[2019-09-12T11:13:12.781Z] + docker run --rm -v /home/jenkins/workspace/engine_PR-349:/workspace alpine sh -c apk add --no-cache -q git bash && cd /workspace && hack/validate/dco
11:13:23[2019-09-12T11:13:23.046Z] Congratulations! All commits are properly signed with the DCO!