Docker

Login to the Docker Hub.
Pick the repo you want to add the webhook to.
In the menu you see Webhooks, click on it.
Enter a name and enter https://your.bot.url/<project>/docker as url.

In this case the /docker tells chat ‘n’ hook that the webhooks are coming from Docker.
The /<project> tells chat ‘n’ hook what project it is.
Make sure you have /<project>/docker on the end of your url

Example config

hooks:
  <project>:
    docker:
      enabled: true
      scripts:
        push:
          - python /path/to/script.py
      send_to:
        telegram:
          enabled: true
          token: "xx:xxx"
          channels:
            - "-xxxxx"
        slack:
          enabled: false
          bot_name: 'Bot'
          webhooks:
            - 'https://hooks.slack.com/services/xxxx/xxxxx/xxxx'
        mattermost:
          enabled: false
          bot_name: 'Bot'
          webhooks:
            - 'https://mattermost.xxxxx.com/hooks/xxxx'
        discord:
          enabled: false
          bot_name: 'Bot'
          webhooks:
            - 'https://discordapp.com/api/webhooks/xxxx/xxxxxxx'