message: using always image, which is tagged by the name of the branch
diff: @@ -30,7 +30,7 @@ prepare:docker:
  build:demo:
  stage: build
  - image: ${CI_REGISTRY_IMAGE}
  + image: ${CI_REGISTRY_IMAGE}:${DOCKER_TAG}
  before_script:
  - rustup update
  script:
  @@ -56,7 +56,7 @@ build:demo:
  test:integration:
  stage: test
  - image: ${CI_REGISTRY_IMAGE}
  + image: ${CI_REGISTRY_IMAGE}:${DOCKER_TAG}
  allow_failure: true
  before_script:
  - rustup update
  @@ -80,7 +80,7 @@ test:uhyve:
  stage: test
  dependencies:
  - build:demo
  - image: ${CI_REGISTRY_IMAGE}
  + image: ${CI_REGISTRY_IMAGE}:${DOCKER_TAG}
  script:
  - lscpu
  - kvm-ok
  @@ -96,7 +96,7 @@ test:qemu:
  stage: test
  dependencies:
  - build:demo
  - image: ${CI_REGISTRY_IMAGE}
  + image: ${CI_REGISTRY_IMAGE}:${DOCKER_TAG}
  script:
  - lscpu
  - kvm-ok
  