# Slack notifications

You can send notifications to your Slack channel using an [incoming webhook URL](https://api.slack.com/messaging/webhooks).

!!! hint
    Mattermost webhooks are compatible with Slack notification without any special configuration (if Webhooks are enabled).

## Configuration

!!! example "File"
    ```yaml
    notif:
      slack:
        webhookURL: https://hooks.slack.com/services/ABCD12EFG/HIJK34LMN/01234567890abcdefghij
        renderFields: true
        templateBody: |
          Docker tag {{ .Entry.Image }} which you subscribed to through {{ .Entry.Provider }} provider has been released.
    ```

| Name               | Default                            | Description                                                                               |
|--------------------|------------------------------------|-------------------------------------------------------------------------------------------|
| `webhookURL`       |                                    | Slack [incoming webhook URL](https://api.slack.com/messaging/webhooks)                    |
| `webhookURLFile`   |                                    | Use content of secret file as webhook URL if `webhookURL` is not defined                  |
| `renderFields`     | `true`                             | Render [field objects](https://api.slack.com/messaging/composing/layouts#stack_of_blocks) |
| `templateBody`[^1] | See [below](#default-templatebody) | [Notification template](../faq.md#notification-template) for message body                 |

!!! abstract "Environment variables"
    * `DIUN_NOTIF_SLACK_WEBHOOKURL`
    * `DIUN_NOTIF_SLACK_WEBHOOKURLFILE`
    * `DIUN_NOTIF_SLACK_RENDERFIELDS`
    * `DIUN_NOTIF_SLACK_TEMPLATEBODY`

### Default `templateBody`

```
<!channel> Docker tag {{ if .Entry.Image.HubLink }}<{{ .Entry.Image.HubLink }}|`{{ .Entry.Image }}`>{{ else }}`{{ .Entry.Image }}`{{ end }}  {{ if (eq .Entry.Status "new") }}available{{ else }}updated{{ end }}.
```

## Sample

![](../assets/notif/slack.png)

[^1]: Value required