Use xcodebuild (Xcode 8) and automatic signing in CI (Travis/Jenkins) environments

Question

With the release of Xcode 8, Apple introduced a new way of managing the signing configuration. Now you have two options Manual and Automatic.

Answer 1

For me, nothing worked. I solved my problem by changing a file in Xcode app installed on your Mac Mini (CI server with Jenkins), as shown in this link:
https://www.jayway.com/2015/05/21/fixing-your-ios-build-scripts/
Additionally I turned off automatic signing from Xcode.

All done! Finally works!