chart: Allow webhook server env to be set individually (#2377)

Co-authored-by: Yusuke Kuoka <ykuoka@gmail.com>

charts/actions-runner-controller/templates/githubwebhook.deployment.yaml

@@ -117,10 +117,14 @@ spec:
               name: {{ include "actions-runner-controller.secretName" . }}
               optional: true
         {{- end }}
+        {{- if kindIs "slice" .Values.githubWebhookServer.env }}
+        {{- toYaml .Values.githubWebhookServer.env | nindent 8 }}
+        {{- else }}
         {{- range $key, $val := .Values.githubWebhookServer.env }}
         - name: {{ $key }}
           value: {{ $val | quote }}
         {{- end }}
+        {{- end }}
         image: "{{ .Values.image.repository }}:{{ .Values.image.tag  | default (cat "v" .Chart.AppVersion | replace " " "") }}"
         name: github-webhook-server
         imagePullPolicy: {{ .Values.image.pullPolicy }}

charts/actions-runner-controller/values.yaml

@@ -279,6 +279,19 @@ githubWebhookServer:
   # queueLimit: 100
   terminationGracePeriodSeconds: 10
   lifecycle: {}
+  # specify additional environment variables for the webhook server pod.
+  # It's possible to specify either key vale pairs e.g.:
+  # my_env_var: "some value"
+  # my_other_env_var: "other value"
+
+  # or a list of complete environment variable definitions e.g.:
+  # - name: GITHUB_WEBHOOK_SECRET_TOKEN
+  #   valueFrom:
+  #     secretKeyRef:
+  #       key: GITHUB_WEBHOOK_SECRET_TOKEN
+  #       name: prod-gha-controller-webhook-token
+  #       optional: true
+  env: {}
 
 actionsMetrics:
   serviceAnnotations: {}