[Bug]: Preview deployments are not auto-triggering on PR open

[qumberrizvi]

Error Message and Logs

I’ve used the GitHub app to deploy a web app using a Dockerfile. The deployment pipeline triggers correctly when a new commit is pushed to the main branch. However, when a new pull request is opened, it does not automatically trigger the Preview Deployment.
If I go to the Preview Deployment section and click “Load Pull Requests,” the PR appears, and I can trigger the deployment manually, which works fine.
I’ve also verified that the GitHub app has permission to read and write pull requests and is subscribed to pull request events. In the app logs, I can see that webhook events for pull requests are being sent.

Steps to Reproduce

1. Setup a new application using Github App and Dockerfile
2. Ensure the app has all the required permissions.
3. Setup preview deployment including DNS.
4. Open a new PR

Example Repository URL

No response

Coolify Version

v4.0.0-beta.470

Are you using Coolify Cloud?

No (self-hosted)

Operating System and Version (self-hosted)

Ubuntu 24.04.4 LTS

Additional Information

Please advise if there is a way to extract logs on the Coolify side that can help identify if there are errors while consuming the webhooks.

[coderabbitai]

🔗 Related PRs

#4771 - fix: pull latest image from registry when using build server [merged]
#5444 - Feat(api): Add Pull Request deployment support to WebHooks [merged]
#7164 - Cancel active deployments when a pull request is closed [merged]
#7537 - fix: Add comprehensive PR cleanup to GitLab, Bitbucket, and Gitea [merged]

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[toblum]

Yes, same behaviour here.Also on v4.0.0-beta.470 self-hosted.

[bartponikiewski]

I can confirm, version v4.0.0-beta.452 self-hosted

[Cinzya]

@qumberrizvi @toblum @bartponikiewski Are the webhook requests going through without any problems?

in your app, can you go to Source and click on Open Git App.

Then App Settings, and check for failed webhooks in the Response tab.

[toblum]

Hi @Cinzya,

thank your for looking into this one.

I tried with a fresh PR and can confirm that the webhook requests show up as successful in the Git App

The new PR doesn't show up in coolify.

If I click "Load pull requests", it shows up and I can deploy it manually.

Best regards!

[toblum]

One thing I also noticed: When I merged and closed the PR, the deployment was instantly removed from Coolify without manual intervention.

[bremnes]

@toblum, @qumberrizvi Just asking an obvious question as I too encountered this and didn't find the appropriate setting at first. (I expected it to be under Configuration -> Preview Deployments, it's non-optimal UX that there's no information on that page about preview deployments not being enabled.)

Have you enabled Preview Deployments under Configuration -> Advanced -> Deployment as in the screenshot below? Once I enabled that it was all smooth sailing with preview deployments being created for my PRs. If you check the recent deliveries in your GitHub App settings, you'll see the response body says Preview deployments disabled when this is the cause - which is how I tracked it down.

[qumberrizvi]

@bremnes
Thanks for the very helpful hint. That WAS the issue for me.
You are on point about the weak UX. That's not the best place for that switch 😅
Ideally, it should be on the Preview Deployment page itself or perhaps documented with a big warning block in the docs.

[toblum]

@bremnes Thank you for the hint, but in my case it was enabled.