what I'm trying to do is to create a following CI flow with standard AWS tools: CodeCommit -> CodePipeline (CodeBuild) so run a build when a Pull Request in CodeCommit is created. From what I've seen so far, the pull request is from a specific branch to master and the CodePipeline then reacts and start CodeBuild.
Is it possible to do this with CodeBuild + CodePipeline for such CI workflow ? I've noticed that I have to specify exact branch in CodePipeline and I don't want to create one pipeline per user's branch, did I missed something ?