Update CI

.gitlab-ci.yml

 stages:
   - build
 
-.build:
+build:
   stage: build
-  image: 
-      name: gitlab-registry.cern.ch/ci-tools/docker-image-builder
-      entrypoint: [""]
+  image:
+    # We recommend using the CERN version of the Kaniko image: gitlab-registry.cern.ch/ci-tools/docker-image-builder
+    name: gitlab-registry.cern.ch/ci-tools/docker-image-builder
+    entrypoint: [""]
   script:
-      - echo "{\"auths\":{\"$CI_REGISTRY\":{\"username\":\"$CI_REGISTRY_USER\",\"password\":\"$CI_REGISTRY_PASSWORD\"}}}" > /kaniko/.docker/config.json
-      - /kaniko/executor --context $CI_PROJECT_DIR --dockerfile $CI_PROJECT_DIR/Dockerfile --destination $IMAGE_DESTINATION
-      - echo "Image pushed successfully to ${IMAGE_DESTINATION}"
-
-
-#####################################################
-################### Merge Requests ##################
-
-build_mr:
-  extends: .build
-  variables:
-    IMAGE_DESTINATION: ${CI_REGISTRY_IMAGE}/openshift-cli:${CI_COMMIT_REF_SLUG}
-  rules:
-    - if:  $CI_MERGE_REQUEST_ID
-      when: manual
-      allow_failure: true
-    - when: never
-
-######################################################
-#################### Master branch ###################
-
-build_master:
-  extends: .build
-  variables:
-    IMAGE_DESTINATION: ${CI_REGISTRY_IMAGE}/openshift-cli:latest
-  rules:
-    - if: $CI_COMMIT_BRANCH == 'master'
-    - when: never
+    - |
+      case "$CI_COMMIT_BRANCH" in
+        v*) export DATE=$(date -u +%Y.%m.%dT%H-%M-%SZ); export TAG="RELEASE"-${DATE}; echo "TAG=$TAG" >> build.env ;;
+        *) export TAG=$CI_COMMIT_SHORT_SHA ;;
+      esac
+    - wget --no-check-certificate https://github.com/mikefarah/yq/releases/download/v4.2.0/yq_linux_amd64 -O /yq && chmod +x /yq
+      # This is not the common Authentication config, unknown reason why common config fails
+    - echo "{\"auths\":{\"$CI_REGISTRY\":{\"auth\":\"$(echo -n ${CI_REGISTRY_USER}:${CI_REGISTRY_PASSWORD} | base64)\"}}}" > /kaniko/.docker/config.json
+      # Image builder
+    - /kaniko/executor --context $CI_PROJECT_DIR --dockerfile $CI_PROJECT_DIR/Dockerfile --destination ${CI_REGISTRY_IMAGE}/velero-restore:${CI_COMMIT_BRANCH}-${TAG}
+    - echo "Image pushed successfully to ${CI_REGISTRY_IMAGE}/velero-restore:${CI_COMMIT_BRANCH}-${TAG}"
+  artifacts:
+    reports:
+      dotenv: build.env