Add backup as crontab

app-of-apps/keycloak.jsonnet

@@ -10,6 +10,22 @@ appDef.helmApplication(
             enabled: true,
             hostname: "keycloak.avril"
         },
+        initContainers: [
+            // https://stackoverflow.com/a/70947232/1040915
+            {
+                name: "add-backup-to-crontab",
+                image: "ubuntu",
+                command: [
+                    "/bin/sh",
+                    "-c",
+                    'apt update; apt install -y cron; echo "* * * * * /opt/bitnami/keycloak/bin/kc.sh export --file /backup/realm-export-$(date +%s).json --realm new-realm" | crontab -'
+                ],
+                securityContext: {
+                    allowPrivilegeEscalation: true,
+                    runAsUser: 0
+                }
+            }
+        ],
         image: {
             tag: "24.0.2"
         },