title: Jenkins: where is the login.keychain file in /Users/*name*/Library/Keychains folder?
body: <p>I am trying to packaging an iOS ipa with Jenkins. So I get Keychains and Provisioning Profiles Management plugin and try to upload keychain which it needs.
  My Mac operating system is sierra(10.12.2), I enter the folder at /Users/admin/Library/Keychains. But there is only a file called login.keychain-db and it's doesn't work when I have uploaded this file on Jenkins. The error says that uploaded file "login.keychain-db" is no keychain or provisioning profile file.
  So how can I solve it or where can I find login.keychain file?
  Thanks in advance.</p>