fix: use .Values.service.name

templates/ingress.yaml

 {{- if .Values.ingress.enabled -}}
 {{- $apiVersions := .Capabilities.APIVersions -}}
-{{- $serviceName := include "docker-registry.fullname" . -}}
+{{- $serviceName := .Values.service.name | default (include "docker-registry.fullname" .) -}}
 {{- $servicePort := .Values.service.port -}}
 {{- $path := .Values.ingress.path -}}
 apiVersion: {{- if $apiVersions.Has "networking.k8s.io/v1" }} networking.k8s.io/v1 {{- else }} networking.k8s.io/v1beta1 {{- end }}

templates/service.yaml

 apiVersion: v1
 kind: Service
 metadata:
-{{- if .Values.service.name }}
-  name: {{ .Values.service.name }}
-{{- else }}
-  name: {{ template "docker-registry.fullname" . }}
-{{- end }}
+  name: {{ .Values.service.name | default (include "docker-registry.fullname" .) }}
   namespace: {{ .Values.namespace | default .Release.Namespace }}
   labels:
     app: {{ template "docker-registry.name" . }}