feat(kubernetes/chart): add container security context support for Helm chart

Signed-off-by: Ruins He <lyhypacm@gmail.com>

deployments/kubernetes/chart/reloader/templates/deployment.yaml

@@ -114,6 +114,10 @@ spec:
           periodSeconds: {{ .Values.reloader.deployment.readinessProbe.periodSeconds | default "10" }}
           successThreshold: {{ .Values.reloader.deployment.readinessProbe.successThreshold | default "1" }}
 
+      {{- with .Values.reloader.deployment.containerSecurityContext }}
+        securityContext: {{ toYaml . | nindent 10 }}
+      {{- end }}
+
       {{- if eq .Values.reloader.readOnlyRootFileSystem true }}
         volumeMounts:
           - mountPath: /tmp/

deployments/kubernetes/chart/reloader/values.yaml

@@ -41,6 +41,14 @@ reloader:
       runAsNonRoot: true
       runAsUser: 65534
 
+    containerSecurityContext: {}
+      # capabilities:
+      #   drop:
+      #     - ALL
+      # allowPrivilegeEscalation: false
+      # readOnlyRootFilesystem: true
+
+
     # A list of tolerations to be applied to the Deployment.
     # Example:
     #   tolerations: