Console Output

11:58:25 + make -e validate
11:58:25 mkdir bundles
11:58:25 docker build -t "dockerbuildbot/libcompose:d40bf4c4cf940e69cbed0a759ba018eff7c1b2e0" .
11:58:25 Sending build context to Docker daemon  6.578MB

11:58:25 Step 1/14 : FROM golang:1.12.7
11:58:25  ---> be63d15101cb
11:58:25 Step 2/14 : RUN apt-get update &&     apt-get install -y iptables build-essential --no-install-recommends &&     apt-get install -y python-pip &&     pip install virtualenv
11:58:25  ---> Using cache
11:58:25  ---> 4b698cf52dce
11:58:25 Step 3/14 : RUN GO111MODULE=off go get github.com/aktau/github-release &&     GO111MODULE=off go get golang.org/x/tools/cmd/cover &&     GO111MODULE=off go get golang.org/x/lint/golint
11:58:25  ---> Using cache
11:58:25  ---> 64d1e7b9bc13
11:58:25 Step 4/14 : ENV DOCKER_VERSIONS 1.9.1 1.10.3 1.13.1 17.03.2 17.06.0
11:58:25  ---> Using cache
11:58:25  ---> 120ee170468b
11:58:25 Step 5/14 : ENV DEFAULT_DOCKER_VERSION 17.03.2
11:58:25  ---> Using cache
11:58:25  ---> 55195e7a3552
11:58:25 Step 6/14 : RUN set -e; set -x;     for v in $(echo ${DOCKER_VERSIONS} | cut -f1); do         if test "${v}" = "1.9.1" || test "${v}" = "1.10.3"; then            mkdir -p /usr/local/bin/docker-${v}/;            curl https://get.docker.com/builds/Linux/x86_64/docker-${v} -o /usr/local/bin/docker-${v}/docker;            chmod +x /usr/local/bin/docker-${v}/docker;         elif test "${v}" = "1.13.1"; then            curl https://get.docker.com/builds/Linux/x86_64/docker-${v}.tgz -o docker-${v}.tgz;              tar xzf docker-${v}.tgz -C /usr/local/bin/;              mv /usr/local/bin/docker /usr/local/bin/docker-${v};              rm docker-${v}.tgz;         else              curl https://download.docker.com/linux/static/stable/x86_64/docker-${v}-ce.tgz -o docker-${v}.tgz;              tar xzf docker-${v}.tgz -C /usr/local/bin/;              mv /usr/local/bin/docker /usr/local/bin/docker-${v};              rm docker-${v}.tgz;         fi     done
11:58:25  ---> Using cache
11:58:25  ---> 4072185992e9
11:58:25 Step 7/14 : RUN ln -s /usr/local/bin/docker-${DEFAULT_DOCKER_VERSION} /usr/local/bin/docker
11:58:25  ---> Using cache
11:58:25  ---> dff4d6d9b7a8
11:58:25 Step 8/14 : WORKDIR /go/src/github.com/docker/libcompose
11:58:25  ---> Using cache
11:58:25  ---> 40fe1b6c1989
11:58:25 Step 9/14 : ENV COMPOSE_COMMIT 1.9.0
11:58:25  ---> Using cache
11:58:25  ---> e8ec60959278
11:58:25 Step 10/14 : RUN virtualenv venv &&     git clone https://github.com/docker/compose.git venv/compose &&     cd venv/compose &&     git checkout -q "$COMPOSE_COMMIT" &&     ../bin/pip install                -r requirements.txt                -r requirements-dev.txt
11:58:25  ---> Using cache
11:58:25  ---> 53873f023f24
11:58:25 Step 11/14 : ENV COMPOSE_BINARY /go/src/github.com/docker/libcompose/libcompose-cli
11:58:25  ---> Using cache
11:58:25  ---> 4a4691026707
11:58:25 Step 12/14 : ENV USER root
11:58:25  ---> Using cache
11:58:25  ---> f2c73b56a043
11:58:25 Step 13/14 : ENTRYPOINT ["hack/dind"]
11:58:25  ---> Using cache
11:58:25  ---> 444136355419
11:58:25 Step 14/14 : COPY . /go/src/github.com/docker/libcompose
11:58:25  ---> Using cache
11:58:25  ---> 82806e1f0d35
11:58:25 Successfully built 82806e1f0d35
11:58:25 Successfully tagged dockerbuildbot/libcompose:d40bf4c4cf940e69cbed0a759ba018eff7c1b2e0
11:58:25 docker run --rm -i  --privileged -e DAEMON_VERSION=""default"" -e OS_PLATFORM_ARG -e OS_ARCH_ARG -e DOCKER_TEST_HOST -e TESTDIRS -e TESTFLAGS -e SHOWWARNING -e TESTVERBOSE -v "/home/ubuntu/workspace/libcompose_PR-532/bundles:/go/src/github.com/docker/libcompose/bundles" "dockerbuildbot/libcompose:d40bf4c4cf940e69cbed0a759ba018eff7c1b2e0" ./hack/make.sh validate-dco validate-git-marks validate-gofmt validate-lint validate-vet
11:58:26 ---> Making bundle: validate-dco (in .)
11:58:26 These commits do not have a proper 'Signed-off-by:' marker:
11:58:26  - d40bf4c4cf940e69cbed0a759ba018eff7c1b2e0
11:58:26 
11:58:26 Please amend each commit to include a properly formatted DCO marker.
11:58:26 
11:58:26 Visit the following URL for information about the Docker DCO:
11:58:26  https://github.com/docker/docker/blob/master/CONTRIBUTING.md#sign-your-work
11:58:26 
11:58:26 Makefile:48: recipe for target 'validate' failed
11:58:26 make: *** [validate] Error 1