I'm generating preview deployments of my apps from pull requests. Those apps will be reachable under a dynamic domain like for example pr23-someapp.domain. Since those urls can become quite verbose I want to automatically place them somewhere in the Pull request, so a reviewer can just simply click on it. So far I've identified two locations where I could place this url:

• as a Comment from a service account:
  • pros: quick and simple to do, full ownership of the content
  • cons: moves further and further to the bottom with each update to the PR like new commits or comments
• inject it into the PR description:
  • pros: Always at the top of the PR so visibility is great
  • cons: not full ownership to the content, the pr author could edit the description, remove the link accidentally, the service would have to always check if the link is still there, which is quite cumbersome

This is why It would be great to attach some kind of metadata like URLs to a pull request in a dedicated location, which wouldn't move when the pr gets updated.