fixup the CI registry (thanks @sascha.herzinger)

.gitlab-ci.yml

@@ -1,42 +1,24 @@
-
-image: docker:19.03.0
+image: docker:20.10.16
 
 variables:
-  # When using dind service, we need to instruct docker, to talk with
-  # the daemon started inside of the service. The daemon is available
-  # with a network connection instead of the default
-  # /var/run/docker.sock socket. docker:19.03.1 does this automatically
-  # by setting the DOCKER_HOST in
-  # https://github.com/docker-library/docker/blob/d45051476babc297257df490d22cbd806f1b11e4/19.03.1/docker-entrypoint.sh#L23-L29
-  #
-  # The 'docker' hostname is the alias of the service container as described at
-  # https://docs.gitlab.com/ee/ci/docker/using_docker_images.html#accessing-the-services.
-  #
-  # Note that if you're using the Kubernetes executor, the variable
-  # should be set to tcp://localhost:2376/ because of how the
-  # Kubernetes executor connects services to the job container
-  #DOCKER_HOST: tcp://localhost:2376/
-  #
-  # When using dind, it's wise to use the overlayfs driver for
-  # improved performance.
   DOCKER_DRIVER: overlay2
-  # Specify to Docker where to create the certificates, Docker will
-  # create them automatically on boot, and will create
-  # `/certs/client` that will be shared between the service and job
-  # container, thanks to volume mount from config.toml
   DOCKER_TLS_CERTDIR: ""
 
 services:
-  - name: docker:19.03.0-dind
-    command: ["--mtu=1458"]
+  - name: repomanager.lcsb.uni.lu:9999/library/docker:20.10.16-dind
+    command: ["--mtu=1458", "--registry-mirror", "https://repomanager.lcsb.uni.lu:9999"]
+    alias: docker
 
-build_image:
-  before_script:
-    - echo -n $DOCKER_AUTH_TOKEN | docker login -u exaexa --password-stdin $CI_REGISTRY
+stages:
+  - build
+
+build:
+  stage: build
   script:
-    - docker build -t $CI_REGISTRY_IMAGE .
-    - docker push $CI_REGISTRY_IMAGE
+    - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
+    - docker build -t $CI_REGISTRY_IMAGE:latest .
+    - docker push $CI_REGISTRY_IMAGE:latest
+  rules:
+    - if: '$CI_COMMIT_REF_NAME == "master"'
   tags:
     - privileged
-  artifacts:
-    expire_in: 1 week