cleanup; readme; workflow_dispatch does not yet work in gitea, but trigger can be changed for pseudo-manual triggers

readme.md

@@ -2,3 +2,43 @@
 # `rotate-backups` in a container image
 
 <https://rotate-backups.readthedocs.io>
+
+## Example usage in kubernetes cronjob
+
+```yaml
+apiVersion: batch/v1
+kind: CronJob
+metadata:
+  name: mariadb-backup-rotate-cron
+  namespace: mariadb
+  labels:
+    app: mariadb-backup-rotate-cron
+spec:
+  schedule: "0 4 20 * *"  # 20th of each month at 4am
+  jobTemplate:
+    spec:
+      template:
+        metadata:
+          labels:
+            app: mariadb-backup-rotate-cron
+        spec:
+          containers:
+          - name: mariadb-backup-rotate-container
+            image: gitea.jbrumond.me/images/rotate-backups:8
+            command: [ "/opt/rotate.sh", "--daily=7", "--weekly=4", "--monthly=12", "--yearly=always" ]
+            resources:
+              limits:
+                cpu: 500m
+                memory: 1Gi
+              requests:
+                cpu: 100m
+                memory: 100Mi
+            volumeMounts:
+            - name: mariadb-backup-persistent-storage
+              mountPath: /data
+          restartPolicy: OnFailure
+          volumes:
+          - name: mariadb-backup-persistent-storage
+            persistentVolumeClaim:
+              claimName: mariadb-backup-pv-claim
+```