Imports gitlab.com/gitlab-org/gitlab-ci-multi-runner/helpers/docker gitlab.com/gitlab-org/gitlab-ci-multi-runner/common gitlab.com/gitlab-org/gitlab-ci-multi-runner/helpers gitlab.com/gitlab-org/gitlab-ci-multi-runner/executors/docker github.com/Sirupsen/logrus Standard library imports crypto/rand errors fmt io/ioutil os sync time