Refactor main.go and introduce make run-scaleset to be able to run manager locally (#2337)

charts/gha-runner-scale-set-controller/templates/deployment.yaml

@@ -54,10 +54,8 @@ spec:
         command:
         - "/manager"
         env:
-        - name: CONTROLLER_MANAGER_POD_NAME
-          valueFrom:
-            fieldRef:
-              fieldPath: metadata.name
+        - name: CONTROLLER_MANAGER_CONTAINER_IMAGE
+          value: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
         - name: CONTROLLER_MANAGER_POD_NAMESPACE
           valueFrom:
             fieldRef:
@@ -98,4 +96,4 @@ spec:
       {{- with .Values.tolerations }}
       tolerations:
         {{- toYaml . | nindent 8 }}
-      {{- end }}
+      {{- end }}