.gitlab-ci.yml

build:
  image: docker:19.03.15
  services:
    - docker:19.03.15-dind
  script:
    - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
    - docker build -t $CI_REGISTRY/group/project/image:latest .
    - docker push $CI_REGISTRY/group/project/image:latest
   variables:
     # This is *the way* to disable TLS for dockerd 19. dockerd 20 does not understand this!
     # Docker 20 should understand the `--tls=false` command line option according to
     # https://gitlab.com/gitlab-org/gitlab-runner/-/issues/27300
     # but I could not get this to work on docker:20.07.15-dind
     DOCKER_TLS_CERTDIR: ""