Convert DockerHub webhook to Slack notification
A short example on integrating two services directly by utilizing Functions.
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A short example on integrating two services directly by utilizing Functions.
Last updated
Was this helpful?
Many Docker registries provide a way to notify team in chat channels when new images are pushed (if you are waiting for a build complete). Letâs add this capability to the official DockerHub registry! :)
Prerequisites:
Docker
Create a bucket here
Once you have it, in the inputs section you will find your public input endpoint, copy it:
Add a new DockerHub webhook setting pointing at our public input endpoint ():
Push a new Docker image:
We should be able to see a new incoming webhook. It looks like this:
You can now copy/paste webhook payload into the ârequest bodyâ area for later tests. In the code editor letâs add a function to get repository name and prepare a Slack webhook payload (currently functions have to be written in Lua but more examples for WebAssembly will be added soon):
Click âSaveâ and then try testing it with the âSendâ button:
Create a new incoming webhook configuration, copy âWebhook URLâ (it starts with https://hooks.slack.com/services/T3...
), we will need to supply it to Webhook Relay.
Open âOUTPUT DESTINATIONSâ tab and create a new output called âSlackâ with the Slack URL from step 2:
Once created, click on the âcodeâ symbol and from the dropdown select dockerhub_to_slack
function:
Push new image to DockerHub, you should see a new notification in your Slack channel:
Thatâs it, feel free to continue modifying Lua function to include pusherâs name and message format. Following this process you can transform any webhook into any other webhook.
Have fun!
Go to the and click on a âCreate Functionâ button. Enter a name, for example âdockerhub-to-slackâ and click âSubmitâ.
Navigate to and click âCreate your Slack appâ. Select your workspace, enter a name that you will remember.
Open your bucket details (via )