How would teamcity get to see closing PRs?

Question

GitHub

When creating a PR, you can force teamcity to run build, assembly, for example, by specifying the path to the script (build dockers, for example), how would you track the closing of the PR by substituting another necessary script for it? To extinguish the same dockers.
Is it even possible in theory?

Answer 1

Since native integration in TC does not respond to pushes from closing PRs, you will have to create your own webhook handler that will launch builds through the Teamcity API.