Getting error while trying to create pages via pipeline


We have deployed gitlab using docker image gitlab/gitlab-ce:12.6.4-ce.0. We have created runner using another docker image gitlab/gitlab-runner:latest and we have registered the gitlab project URL via gitlab runner. Please see the config details,

name = “dsds989”
url = “https:///”
token = “”
executor = “docker”
tls_verify = false
image = “alpine:latest”
privileged = false
disable_entrypoint_overwrite = false
oom_kill_disable = false
disable_cache = false
volumes = ["/cache"]
shm_size = 0

While trying to deploy pages using hugo code it is getting failed with the below error,

27 $ /build/
28 Logging to GitLab Container Registry with CI credentials…
29 WARNING! Using --password via the CLI is insecure. Use --password-stdin.
30 error during connect: Post http://docker:2375/v1.40/auth: dial tcp: lookup docker on :53: no such host
31 ERROR: Job failed: exit code 1

Please help us to fix this error.