feat: configurable tracking image

templates/gitlab-ci-sonar.yml

@@ -14,6 +14,9 @@
 # Floor, Boston, MA  02110-1301, USA.
 # =========================================================================================
 variables:
+  # variabilized tracking image
+  TBC_TRACKING_IMAGE: "$CI_REGISTRY/to-be-continuous/tools/tracking:master"
+
   # Sonar
   SONAR_SCANNER_IMAGE: sonarsource/sonar-scanner-cli:latest
 
@@ -271,7 +274,7 @@ sonar:
     name: $SONAR_SCANNER_IMAGE
     entrypoint: [""]
   services:
-    - name: "$CI_REGISTRY/to-be-continuous/tools/tracking:master"
+    - name: "$TBC_TRACKING_IMAGE"
       command: ["--service", "sonar", "2.0.1" ]
   variables:
     # Tells git to fetch all the branches of the project, required by the analysis task