use the CI variable for the docker image registry location

maven-packages/build.yml

@@ -10,7 +10,7 @@ cache:
 
 build:
   stage: build
-  image: tecnalia-docker-dev.artifact.tecnalia.com/maven:latest
+  image: $ACR_URL/maven:latest
   tags:
     - docker
   script:

maven-packages/deploy.yml

 deploy:
   stage: deploy
-  image: tecnalia-docker-dev.artifact.tecnalia.com/maven:latest
+  image: $ACR_URL/maven:latest
   tags:
     - docker
   script:

maven-packages/tests.yml

 test:
   stage: test
-  image: tecnalia-docker-dev.artifact.tecnalia.com/maven:latest
+  image: $ACR_URL/maven:latest
   tags:
     - docker
   script:

npm-packages/gitlab-ci.yml

-image: digicon-docker-dev.artifact.tecnalia.com/node:12
+image: $ACR_URL/node:12
 before_script:
   - npm -g config set user root
   - npm install -g jfrog-cli-go

project-maven-azure-docker/gitlab-ci.yml

-image: digicon-docker-dev.artifact.tecnalia.com/docker:dind
+image: $ACR_URL/docker:dind
 
 services:
   - docker:dind