| `SONAR_SCANNER_IMAGE` | The Docker image used to run [sonar-scanner](https://docs.sonarqube.org/latest/analysis/scan/sonarscanner/) | `sonarsource/sonar-scanner-cli:latest` |
| `SONAR_SCANNER_IMAGE` | The Docker image used to run [sonar-scanner](https://docs.sonarqube.org/latest/analysis/scan/sonarscanner/) | `registry.hub.docker.com/sonarsource/sonar-scanner-cli:latest` |
| `SONAR_HOST_URL` | SonarQube server url | _none_ (disabled) |
| `SONAR_PROJECT_KEY` | SonarQube Project Key (might also be set in the `sonar-project.properties` file) | fallbacks to `$CI_PROJECT_PATH_SLUG` (see below) |
| `SONAR_PROJECT_NAME` | SonarQube Project Name (might also be set in the `sonar-project.properties` file) | fallbacks to `$CI_PROJECT_PATH` (see below) |