Use docker:18.09.8-dind to fix port mismatch

1 job for 7.3 in 46 seconds (queued for 49 seconds)
Status Job ID Name Coverage
  Build
failed #4924
build-master

00:00:46

 
Name Stage Failure
failed
build-master Build
WARNING! Using --password via the CLI is insecure. Use --password-stdin.
WARNING! Your password will be stored unencrypted in /root/.docker/config.json.
Configure a credential helper to remove this warning. See
https://docs.docker.com/engine/reference/commandline/login/#credentials-store

Login Succeeded
$ docker build --pull -t "$CONTAINER_IMAGE" .
Cannot connect to the Docker daemon at tcp://localhost:2375. Is the docker daemon running?
ERROR: Job failed: exit code 1