Docker.gitlab-ci.yml incomplete/faulty?
Running with gitlab-ci-multi-runner 1.4.2 (bcc1794)
Using Docker executor with image docker:latest ...
Pulling docker image docker:latest ...
Running on runner-8a2f473d-project-1467398-concurrent-0 via runner-8a2f473d-machine-1470917180-acd6cf5f-digital-ocean-4gb...
Cloning repository...
Cloning into '/builds/BertBruynooghe/upnxt_service_AAA'...
Checking out 3c7da2c5 as master...
$ docker build -t aaa_service . --build-arg UPNXT_GEM_SOURCE=$UPNXT_GEM_SOURCE
Cannot connect to the Docker daemon. Is the docker daemon running on this host?
ERROR: Build failed: exit code 1