Added SonarQube to the pipeline.

.gitlab-ci.yml

@@ -2,7 +2,7 @@
 stages:
   - tox
   - documentation
-
+  - sonarqube
 include:
   - docs/.gitlab-ci.yml
 
@@ -16,6 +16,7 @@ run-tox-pipeline:
   services:
     - postgres:15.4
 
+
   # Change pip's cache directory to be inside the project directory since we can
   # only cache local items.
   variables:
@@ -46,3 +47,11 @@ run-tox-pipeline:
   artifacts:
     paths:
       - htmlcov
+
+sonarqube:
+  stage: sonarqube
+  image: sonarsource/sonar-scanner-cli
+  script:
+    - sonar-scanner -Dsonar.login=$SONAR_TOKEN -Dproject.settings=./sonar.properties
+  tags:
+    - docker-executor