Upgraded GoCron; web ui viewer for viewing cron jobs

docs/content/config/gocron.md

@@ -0,0 +1,54 @@
+---
+title: "Configuring Cron"
+weight: 3
+description: >
+  Use Cron to run lists at a specified time.
+---
+
+Backy provides an easy-to-use way to execute commands at a specified time.
+
+Adding `cron: 0 0 1 * * *` to a `cmdLists` object will schedule the list at 1 in the morning. See [https://crontab.guru/](https://crontab.guru/) for reference.
+
+{{% notice tip %}}
+Note: Backy uses the second field of cron, so add anything except `*` to the beginning of a regular cron expression.
+{{% /notice %}}
+
+GoCron allows one to configure a server to view the jobs in the scheduler. See [GoCron UI GitHub](https://github.com/go-co-op/gocron-ui).
+GoCron can be configured or left alone for defaults.
+
+
+GoCron configuration:
+
+| key | description | type | required | default
+| --- | --- | --- | --- | ---
+| `bindAddress` | Interface's IP to bind to. Must not contain port. | `string` | no | `:port`
+| `port` | Port to use. | `int` | no | `8888`
+| `useSeconds` | Whether to parse the second cron field. | `bool` | no | `false`
+
+
+```yaml {lineNos="true" wrap="true" title="yaml"}
+goCron:
+  bindAddress: "0.0.0.0"
+  port: 8888
+  useSeconds: true
+
+cmdLists:
+  docker-container-backup: # this can be any name you want
+    # all commands have to be defined
+    order:
+      - stop-docker-container
+      - backup-docker-container-script
+      - shell-cmd
+      - hostname
+      - start-docker-container
+    notifications:
+      - matrix.id
+    name: backup-some-container
+    cron: "0 0 1 * * *"
+  hostname:
+    name: hostname
+    order:
+      - hostname
+    notifications:
+      - mail.prod-email
+```