Add cronjob to clear mylar3 cache

cluster/apps/download/mylar3/cache-cronjob.yaml

@@ -0,0 +1,31 @@
+apiVersion: batch/v1
+kind: CronJob
+metadata:
+  name: clear-mylar3-cache
+  namespace: download
+spec:
+  # 4am every day
+  schedule: "0 4 * * *"
+  jobTemplate:
+    spec:
+      template:
+        spec:
+          containers:
+          - name: clear-mylar3-cache
+            image: frolvlad/alpine-bash
+            imagePullPolicy: IfNotPresent
+            command:
+            - /bin/bash
+            - -c
+            - find /config/mylar/cache/* -maxdepth 1 ! -name "*.jpg" -delete
+            volumeMounts:
+            - name: mylar3-config
+              mountPath: /config
+            securityContext:
+              runAsNonRoot: true
+              runAsUser: 1000
+          restartPolicy: OnFailure
+          volumes:
+          - name: mylar3-config
+            hostPath:
+              path: /mnt/MainPool/Kubernetes/mylar3

cluster/apps/download/mylar3/kustomization.yaml

@@ -2,3 +2,4 @@ apiVersion: kustomize.config.k8s.io/v1beta1
 kind: Kustomization
 resources:
 - ./helm-release.yaml
+- ./cache-cronjob.yaml