Resolve "Some jobs running with docker service even if not needed."

Closes #51 (closed)

ci-templates/core.yml

@@ -15,10 +15,6 @@ stages:
   - build
   - deploy
 
-before_script:
-  - apk add --update bash coreutils tar wget
-  - docker login tecnalia-docker-dev.artifact.tecnalia.com -u ${ARTIFACT_CI_USER} -p ${ARTIFACT_CI_TOKEN}
-
 include:
   - ci-templates/syntax-check.yml
   - ci-templates/industrial-ci-templates.yml