Technical requirements
In this chapter, we’re going to be sending notifications from a GitHub action to Slack. To do this, we need to create a Slack app and a Slack workspace to install it into. You can easily set one up at https://slack.com if you don’t have access to one already.
In addition to the account, the app can be created by following the instructions at https://api.slack.com/messaging/webhooks. Take the webhook URL and create it as a secret on the organization with a name of SLACK_WEBHOOK_URL.
