void tryAddKnownHost(String hostUrl){
    // ssh-keygen -F ${hostUrl} will fail (in bash that means status code != 0) if ${hostUrl} is not yet a known host
    def statusCode = sh script:"ssh-keygen -F ${hostUrl}", returnStatus:true
    if(statusCode != 0){
        sh "mkdir -p ~/.ssh"
        sh "ssh-keyscan ${hostUrl} >> ~/.ssh/known_hosts"
    }
}

pipeline {
    agent {
        docker { image 'pegasyseng/pantheon-build:0.0.2' }
    }
    stages {
        stage('Release') {
            steps {
                sshagent(
                    credentials: ['pegasys-admin-github-ssh-private-key']
                ) {
                    withCredentials([
                        usernamePassword(
                            credentialsId: 'pegasys-bintray',
                            usernameVariable: 'BINTRAY_USER',
                            passwordVariable: 'BINTRAY_KEY'
                        )
                    ]) {
                        withEnv([
                            'GIT_COMMITTER_NAME="PegaSys Admin"',
                            'GIT_COMMITTER_EMAIL="pegasys.manager@gmail.com"',
                            'GIT_AUTHOR_NAME="PegaSys Admin"',
                            'GIT_AUTHOR_EMAIL="pegasys.manager@gmail.com"'
                        ]) {
                            tryAddKnownHost('github.com')
                            sh './gradlew release -Prelease.useAutomaticVersion=true -Prelease.releaseVersion=0.8.0-RC2 -Prelease.newVersion=0.8.0-SNAPSHOT'
                        }
                    }
                }
            }
        }
    }
}