Merge pull request #1022 from kubernetes-incubator/ant31-patch-1

Document gitlab-runner.sh

scripts/gitlab-runner.sh

+#!/bin/sh
+
+docker run -d --name gitlab-runner --restart always -v /srv/gitlab-runner/cache:/srv/gitlab-runner/cache -v /srv/gitlab-runner/config:/etc/gitlab-runner -v /var/run/docker.sock:/var/run/docker.sock gitlab/gitlab-runner:v1.10.0
+
+#
+#/srv/gitlab-runner/config# cat config.toml
+#concurrent = 10
+#check_interval = 1
+
+#[[runners]]
+#  name = "2edf3d71fe19"
+#  url = "https://gitlab.com"
+#  token = "THE TOKEN-CHANGEME"
+#  executor = "docker"
+#  [runners.docker]
+#    tls_verify = false
+#    image = "docker:latest"
+#    privileged = true
+#    disable_cache = false
+#    cache_dir = "/srv/gitlab-runner/cache"
+#    volumes = ["/var/run/docker.sock:/var/run/docker.sock", "/srv/gitlab-runner/cache:/cache:rw"]
+#  [runners.cache]