feat(builder): shared nav shell, fail notify, sanitizer wiring

Signed-off-by: Anton Afanasyeu <a.afanasieff@gmail.com>

views/build_detail.php

@@ -15,6 +15,7 @@ if ($pipelineYaml === '') {
 }
 $stepLabels = [
     'git' => 'Git checkout / shallow clone',
+    'docker-setup' => 'Builder host (Docker daemon)',
     'docker-build' => 'Docker image build',
     'docker-run' => 'Gradle pipeline (docker run)',
 ];