To configure it for your environment, create an application on Slack and use the slack-manifest.yaml file to configure it. Don't forget to update the URLs to natch your environment.
To publish it, run the command with the SLACK_CLIENT_ID, SLACK_CLIENT_SECRET, and SLACK_SIGNING_SECRET environment variables defined:
SLACK_CLIENT_ID=xxx SLACK_CLIENT_SECRET=xxxx SLACK_SIGNING_SECRET=xxxx npm run publish-integrations